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        Apache HAWQ (incubating)
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      <li><a href="/docs/userguide/2.2.0.0-incubating/requirements/system-requirements.html">System Requirements</a>
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        <span>
          HAWQ System Overview
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/overview/HAWQOverview.html">What is HAWQ?</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/overview/HAWQArchitecture.html">HAWQ Architecture</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/overview/TableDistributionStorage.html">Table Distribution and Storage</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/overview/ElasticSegments.html">Elastic Query Execution Runtime</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/overview/ResourceManagement.html">Resource Management</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/overview/HDFSCatalogCache.html">HDFS Catalog Cache</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/overview/ManagementTools.html">Management Tools</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/overview/RedundancyFailover.html">High Availability, Redundancy and Fault Tolerance</a>
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        <a href="/docs/userguide/2.2.0.0-incubating/tutorial/overview.html">Getting Started with HAWQ Tutorial</a>
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              <a href="/docs/userguide/2.2.0.0-incubating/tutorial/gettingstarted/introhawqenv.html">Lesson 1 - Runtime Environment</a>
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              <a href="/docs/userguide/2.2.0.0-incubating/tutorial/gettingstarted/basichawqadmin.html">Lesson 2 - Cluster Administration</a>
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              <a href="/docs/userguide/2.2.0.0-incubating/tutorial/gettingstarted/basicdbadmin.html">Lesson 3 - Database Administration</a>
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              <a href="/docs/userguide/2.2.0.0-incubating/tutorial/gettingstarted/dataandscripts.html">Lesson 4 - Sample Data Set and HAWQ Schemas</a>
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              <a href="/docs/userguide/2.2.0.0-incubating/tutorial/gettingstarted/introhawqtbls.html">Lesson 5 - HAWQ Tables</a>
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              <a href="/docs/userguide/2.2.0.0-incubating/tutorial/gettingstarted/intropxfhdfs.html">Lesson 6 - HAWQ Extension Framework (PXF)</a>
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        <span>
          Running a HAWQ Cluster
        </span>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/RunningHAWQ.html">Overview</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/setuphawqopenv.html">Introducing the HAWQ Operating Environment</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/admin/ambari-admin.html">Managing HAWQ Using Ambari</a>
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              <a href="/docs/userguide/2.2.0.0-incubating/admin/ambari-rest-api.html">Using the Ambari REST API</a>
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           </ul>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/startstop.html">Starting and Stopping HAWQ</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/ClusterExpansion.html">Expanding a Cluster</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/admin/ClusterShrink.html">Removing a Node</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/admin/BackingUpandRestoringHAWQDatabases.html">Backing Up and Restoring HAWQ</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/HighAvailability.html">High Availability in HAWQ</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/admin/MasterMirroring.html">Master Mirroring</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/HAWQFilespacesandHighAvailabilityEnabledHDFS.html">HAWQ Filespaces and High Availability Enabled HDFS</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/FaultTolerance.html">Understanding the Fault Tolerance Service</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/admin/RecommendedMonitoringTasks.html">Recommended Monitoring and Maintenance Tasks</a>
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            <a href="/docs/userguide/2.2.0.0-incubating/admin/maintain.html">Routine System Maintenance Tasks</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/monitor.html">Monitoring a HAWQ System</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/admin/logfiles.html">HAWQ Administrative Log Files</a>
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        </ul>
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        <span>
          Managing Resources
        </span>
        <ul>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/resourcemgmt/HAWQResourceManagement.html">How HAWQ Manages Resources</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/resourcemgmt/best-practices.html">Best Practices for Configuring Resource Management</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/resourcemgmt/ConfigureResourceManagement.html">Configuring Resource Management</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/resourcemgmt/YARNIntegration.html">Integrating YARN with HAWQ</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/resourcemgmt/ResourceQueues.html">Working with Hierarchical Resource Queues</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/resourcemgmt/ResourceManagerStatus.html">Analyzing Resource Manager Status</a>
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        </ul>
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        <span>
          Managing Client Access
        </span>
        <ul>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/client_auth.html">Configuring Client Authentication</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/ldap.html">Using LDAP Authentication with TLS/SSL</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/kerberos.html">Using Kerberos Authentication</a>
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          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/disable-kerberos.html">Disabling Kerberos Security</a>
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          <li>
              <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/hawq-access-checks.html">Overview of HAWQ Authorization</a>
          </li>
          <li>
              <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/roles_privs.html">Using HAWQ Native Authorization</a>
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                     <span>
                        Using Ranger for Authorization
                     </span>
               <ul>
                  <li>
                     <a href="/docs/userguide/2.2.0.0-incubating/ranger/ranger-overview.html">Overview of Ranger Policy Management</a>
                  </li>
                  <li>
                     <a href="/docs/userguide/2.2.0.0-incubating/ranger/ranger-integration-config.html">Configuring HAWQ to use Ranger Policy Management</a>
                  </li>
                  <li class="has_submenu">
                     <a href="/docs/userguide/2.2.0.0-incubating/ranger/ranger-policy-creation.html">Creating HAWQ Authorization Policies in Ranger</a>
                    <ul>
                      <li>
                         <a href="/docs/userguide/2.2.0.0-incubating/ranger/ranger-resource-perms.html">HAWQ Resources and Permissions</a>
                      </li>
                      <li>
                         <a href="/docs/userguide/2.2.0.0-incubating/ranger/ranger-sqlcmd-summary.html">SQL Command Permissions Summary</a>
                      </li>
                      <li>
                         <a href="/docs/userguide/2.2.0.0-incubating/ranger/madlib-ranger.html">Using MADLib with Ranger Authorization</a>
                      </li>
                    </ul>
                  </li>
                  <li>
                     <a href="/docs/userguide/2.2.0.0-incubating/ranger/ranger-auditing.html">Auditing Authorization Events</a>
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                  <li>
                     <a href="/docs/userguide/2.2.0.0-incubating/ranger/ranger-ha.html">High Availability and HAWQ Ranger</a>
                  </li>
               </ul>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/g-establishing-a-database-session.html">Establishing a Database Session</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/g-hawq-database-client-applications.html">HAWQ Client Applications</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/g-connecting-with-psql.html">Connecting with psql</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/g-database-application-interfaces.html">HAWQ Database Drivers and APIs</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/clientaccess/g-troubleshooting-connection-problems.html">Troubleshooting Connection Problems</a>
          </li>
        </ul>
      </li>
      <li class="has_submenu">
        <span>
          Defining Database Objects
        </span>
        <ul>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl.html">Overview</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl-database.html">Creating and Managing Databases</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl-tablespace.html">Creating and Managing Tablespaces</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl-schema.html">Creating and Managing Schemas</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl-table.html">Creating and Managing Tables</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/locate-table-hdfs.html"> Identifying HAWQ Table HDFS Files</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl-storage.html">Choosing the Table Storage Model</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl-partition.html">Partitioning Large Tables</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/ddl/ddl-view.html">Creating and Managing Views</a>
          </li>
        </ul>
      </li>
      <li class="has_submenu">
        <span>
          Using Procedural Languages
        </span>
        <ul>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/plext/UsingProceduralLanguages.html">Using Languages in HAWQ</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/plext/builtin_langs.html">Using HAWQ Built-In Languages</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/plext/using_pljava.html">Using PL/Java</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/plext/using_plpgsql.html">Using PL/pgSQL</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/plext/using_plpython.html">Using PL/Python</a>
          </li>
          <li>
            <a href="/docs/userguide/2.2.0.0-incubating/plext/using_plr.html">Using PL/R</a>
          </li>
        </ul>
      </li>
      <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/dml.html">Managing Data with HAWQ</a>
        <ul>
          <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/BasicDataOperations.html">Basic Data Operations</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/about_statistics.html">About Database Statistics</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/ConcurrencyControl.html">Concurrency Control</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/Transactions.html">Working with Transactions</a></li>
          <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-loading-and-unloading-data.html">Loading and Unloading Data</a>
            <ul>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-working-with-file-based-ext-tables.html">Working with File-Based External Tables</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-external-tables.html">Accessing File-Based External Tables</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-gpfdist-protocol.html">gpfdist Protocol</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-gpfdists-protocol.html">gpfdists Protocol</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-handling-errors-ext-table-data.html">Handling Errors in External Table Data</a></li>
                </ul>
              </li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-using-the-hawq-file-server--gpfdist-.html">Using the HAWQ File Server (gpfdist)</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-about-gpfdist-setup-and-performance.html">About gpfdist Setup and Performance</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-controlling-segment-parallelism.html">Controlling Segment Parallelism</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-installing-gpfdist.html">Installing gpfdist</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-starting-and-stopping-gpfdist.html">Starting and Stopping gpfdist</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-troubleshooting-gpfdist.html">Troubleshooting gpfdist</a></li>
                </ul>
              </li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-creating-and-using-web-external-tables.html">Creating and Using Web External Tables</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-command-based-web-external-tables.html">Command-based Web External Tables</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-url-based-web-external-tables.html">URL-based Web External Tables</a></li>
                </ul>
              </li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-loading-data-using-an-external-table.html">Loading Data Using an External Table</a></li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-loading-and-writing-non-hdfs-custom-data.html">Loading and Writing Non-HDFS Custom Data</a>
                <ul>
                  <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-using-a-custom-format.html">Using a Custom Format</a>
                    <ul>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-importing-and-exporting-fixed-width-data.html">Importing and Exporting Fixed Width Data</a></li>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-examples-read-fixed-width-data.html">Examples - Read Fixed-Width Data</a></li>
                    </ul>
                  </li>
                </ul>
              </li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/creating-external-tables-examples.html">Creating External Tables - Examples</a>
              </li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-handling-load-errors.html">Handling Load Errors</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-define-an-external-table-with-single-row-error-isolation.html">Define an External Table with Single Row Error Isolation</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-create-an-error-table-and-declare-a-reject-limit.html">Capture Row Formatting Errors and Declare a Reject Limit </a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-identifying-invalid-csv-files-in-error-table-data.html">Identifying Invalid CSV Files in Error Table Data</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-moving-data-between-tables.html">Moving Data between Tables</a></li>
                </ul>
              </li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-register_files.html">Registering Files into HAWQ Internal Tables</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-loading-data-with-hawqload.html">Loading Data with hawq load</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-loading-data-with-copy.html">Loading Data with COPY</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-running-copy-in-single-row-error-isolation-mode.html">Running COPY in Single Row Error Isolation Mode</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-optimizing-data-load-and-query-performance.html">Optimizing Data Load and Query Performance</a></li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-unloading-data-from-hawq-database.html">Unloading Data from HAWQ</a>
                <ul>
                  <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-defining-a-file-based-writable-external-table.html">Defining a File-Based Writable External Table</a>
                    <ul>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-example-hawq-file-server-gpfdist.html">Example - HAWQ file server (gpfdist)</a></li>
                    </ul>
                  </li>
                  <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-defining-a-command-based-writable-external-web-table.html">Defining a Command-Based Writable External Web Table</a>
                    <ul>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-disabling-execute-for-web-or-writable-external-tables.html">Disabling EXECUTE for Web or Writable External Tables</a></li>
                    </ul>
                  </li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-unloading-data-using-a-writable-external-table.html">Unloading Data Using a Writable External Table</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-unloading-data-using-copy.html">Unloading Data Using COPY</a></li>
                </ul>
              </li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-transforming-xml-data.html">Transforming XML Data</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-determine-the-transformation-schema.html">Determine the Transformation Schema</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-write-a-transform.html">Write a Transform</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-write-the-gpfdist-configuration.html">Write the gpfdist Configuration</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-load-the-data.html">Load the Data</a></li>
                  <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-transfer-and-store-the-data.html">Transfer and Store the Data</a>
                    <ul>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-transforming-with-gpload.html">Transforming with GPLOAD</a></li>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-transforming-with-insert-into-select-from.html">Transforming with INSERT INTO SELECT FROM</a></li>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-configuration-file-format.html">Configuration File Format</a></li>
                    </ul>
                  </li>
                  <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-xml-transformation-examples.html">XML Transformation Examples</a>
                    <ul>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-example-1-dblp-database-publications-in-demo-directory.html">Command-based Web External Tables</a></li>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-example-irs-mef-xml-files-in-demo-directory.html">Example using IRS MeF XML Files (In demo Directory)</a></li>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-example-witsml-files-in-demo-directory.html">Example using WITSML™ Files (In demo Directory)</a></li>
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                  </li>
                </ul>
              </li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-formatting-data-files.html">Formatting Data Files</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-formatting-rows.html">Formatting Rows</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-formatting-columns.html">Formatting Columns</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-representing-null-values.html">Representing NULL Values</a></li>
                  <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-escaping.html">Escaping</a>
                    <ul>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-escaping-in-text-formatted-files.html">Escaping in Text Formatted Files</a></li>
                      <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-escaping-in-csv-formatted-files.html">Escaping in CSV Formatted Files</a></li>
                    </ul>
                  </li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/load/g-character-encoding.html">Character Encoding</a></li>
                </ul>
              </li>
            </ul>
          </li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/datamgmt/HAWQInputFormatforMapReduce.html">HAWQ InputFormat for MapReduce</a></li>
        </ul>
      </li>
      <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/pxf/HawqExtensionFrameworkPXF.html">Using PXF with Unmanaged Data</a>
            <ul>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/InstallPXFPlugins.html">Installing PXF Plugins</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/ConfigurePXF.html">Configuring PXF</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/HDFSFileDataPXF.html">Accessing HDFS File Data</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/HivePXF.html">Accessing Hive Data</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/HBasePXF.html">Accessing HBase Data</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/JsonPXF.html">Accessing JSON Data</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/HDFSWritablePXF.html">Writing Data to HDFS</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/ReadWritePXF.html">Using Profiles to Read and Write Data</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/PXFExternalTableandAPIReference.html">PXF External Tables and API</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/pxf/TroubleshootingPXF.html">Troubleshooting PXF</a></li>
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      </li>
      <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/query/query.html">Querying Data</a>
        <ul>
          <li><a href="/docs/userguide/2.2.0.0-incubating/query/HAWQQueryProcessing.html">About HAWQ Query Processing</a></li>
          <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-optimizer.html">About GPORCA</a>
            <ul>
              <li><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-overview.html">Overview of GPORCA</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-features.html">GPORCA Features and Enhancements</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-enable.html">Enabling GPORCA</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-notes.html">Considerations when Using GPORCA</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-fallback.html">Determining The Query Optimizer In Use</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-changed.html">Changed Behavior with GPORCA</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/query/gporca/query-gporca-limitations.html">GPORCA Limitations</a></li>
            </ul>
          </li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/query/defining-queries.html">Defining Queries</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/query/functions-operators.html">Using Functions and Operators</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/query/query-performance.html">Query Performance</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/query/query-profiling.html">Query Profiling</a></li>
        </ul>
      </li>
      <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/bestpractices/HAWQBestPracticesOverview.html">Best Practices</a>
        <ul>
          <li><a href="/docs/userguide/2.2.0.0-incubating/bestpractices/config_hawq_bestpractices.html">Configuring HAWQ</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/bestpractices/operating_hawq_bestpractices.html">Operating HAWQ</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/bestpractices/secure_bestpractices.html">Securing HAWQ</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/bestpractices/managing_resources_bestpractices.html">Managing Resources</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/bestpractices/managing_data_bestpractices.html">Managing Data</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/bestpractices/querying_data_bestpractices.html">Querying Data</a></li>
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      </li>
      <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/troubleshooting/Troubleshooting.html">Troubleshooting</a>
        <ul>
          <li><a href="/docs/userguide/2.2.0.0-incubating/troubleshooting/Troubleshooting.html#topic_dwd_rnx_15">Query Performance Issues</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/troubleshooting/Troubleshooting.html#topic_vm5_znx_15">Rejection of Query Resource Requests</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/troubleshooting/Troubleshooting.html#topic_qq4_rkl_wv">Queries Cancelled Due to High VMEM Usage</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/troubleshooting/Troubleshooting.html#topic_hlj_zxx_15">Segments Do Not Appear in gp_segment_configuration</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/troubleshooting/Troubleshooting.html#topic_mdz_q2y_15">Handling Segment Resource Fragmentation</a></li>
        </ul>
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      <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/hawq-reference.html">HAWQ Reference</a>
        <ul>
          <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/SQLCommandReference.html">SQL Commands</a>
            <ul>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ABORT.html">ABORT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-AGGREGATE.html">ALTER AGGREGATE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-CONVERSION.html">ALTER CONVERSION</a></li>  
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-DATABASE.html">ALTER DATABASE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-FUNCTION.html">ALTER FUNCTION</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-OPERATOR.html">ALTER OPERATOR</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-OPERATOR-CLASS.html">ALTER OPERATOR CLASS</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-RESOURCE-QUEUE.html">ALTER RESOURCE QUEUE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-ROLE.html">ALTER ROLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-SEQUENCE.html">ALTER SEQUENCE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-TABLE.html">ALTER TABLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-TABLESPACE.html">ALTER TABLESPACE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-TYPE.html">ALTER TYPE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ALTER-USER.html">ALTER USER</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ANALYZE.html">ANALYZE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/BEGIN.html">BEGIN</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CHECKPOINT.html">CHECKPOINT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CLOSE.html">CLOSE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/COMMIT.html">COMMIT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/COPY.html">COPY</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-AGGREGATE.html">CREATE AGGREGATE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-CAST.html">CREATE CAST</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-CONVERSION.html">CREATE CONVERSION</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-DATABASE.html">CREATE DATABASE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-EXTERNAL-TABLE.html">CREATE EXTERNAL TABLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-FUNCTION.html">CREATE FUNCTION</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-GROUP.html">CREATE GROUP</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-LANGUAGE.html">CREATE LANGUAGE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-OPERATOR.html">CREATE OPERATOR</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-OPERATOR-CLASS.html">CREATE OPERATOR CLASS</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-RESOURCE-QUEUE.html">CREATE RESOURCE QUEUE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-ROLE.html">CREATE ROLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-SCHEMA.html">CREATE SCHEMA</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-SEQUENCE.html">CREATE SEQUENCE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-TABLE.html">CREATE TABLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-TABLE-AS.html">CREATE TABLE AS</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-TABLESPACE.html">CREATE TABLESPACE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-TYPE.html">CREATE TYPE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-USER.html">CREATE USER</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/CREATE-VIEW.html">CREATE VIEW</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DEALLOCATE.html">DEALLOCATE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DECLARE.html">DECLARE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-AGGREGATE.html">DROP AGGREGATE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-CAST.html">DROP CAST</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-CONVERSION.html">DROP CONVERSION</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-DATABASE.html">DROP DATABASE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-EXTERNAL-TABLE.html">DROP EXTERNAL TABLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-FILESPACE.html">DROP FILESPACE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-FUNCTION.html">DROP FUNCTION</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-GROUP.html">DROP GROUP</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-LANGUAGE.html">DROP LANGUAGE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-OPERATOR.html">DROP OPERATOR</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-OPERATOR-CLASS.html">DROP OPERATOR CLASS</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-OWNED.html">DROP OWNED</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-RESOURCE-QUEUE.html">DROP RESOURCE QUEUE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-ROLE.html">DROP ROLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-SCHEMA.html">DROP SCHEMA</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-SEQUENCE.html">DROP SEQUENCE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-TABLE.html">DROP TABLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-TABLESPACE.html">DROP TABLESPACE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-TYPE.html">DROP TYPE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-USER.html">DROP USER</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/DROP-VIEW.html">DROP VIEW</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/END.html">END</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/EXECUTE.html">EXECUTE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/EXPLAIN.html">EXPLAIN</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/FETCH.html">FETCH</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/GRANT.html">GRANT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/INSERT.html">INSERT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/PREPARE.html">PREPARE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/REASSIGN-OWNED.html">REASSIGN OWNED</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/RELEASE-SAVEPOINT.html">RELEASE SAVEPOINT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/RESET.html">RESET</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/REVOKE.html">REVOKE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ROLLBACK.html">ROLLBACK</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/ROLLBACK-TO-SAVEPOINT.html">ROLLBACK TO SAVEPOINT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/SAVEPOINT.html">SAVEPOINT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/SELECT.html">SELECT</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/SELECT-INTO.html">SELECT INTO</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/SET.html">SET</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/SET-ROLE.html">SET ROLE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/SET-SESSION-AUTHORIZATION.html">SET SESSION AUTHORIZATION</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/SHOW.html">SHOW</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/TRUNCATE.html">TRUNCATE</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/sql/VACUUM.html">VACUUM</a></li>
            </ul>
          </li>
          <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/HAWQSiteConfig.html">Server Configuration Parameter Reference</a>
            <ul>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_config.html">About Server Configuration Parameters</a></li>
              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html">Configuration Parameter Categories</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic_hfd_1tl_zp">Append-Only Table Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic39">Client Connection Default Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic12">Connection and Authentication Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic47">Database and Tablespace/Filespace Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic29">Error Reporting and Logging Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic45">External Table Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic57">GPORCA Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic49">HAWQ Array Configuration Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic_pxfparam">HAWQ Extension Framework (PXF) Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic56">HAWQ PL/Java Extension Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#hawq_resource_management">HAWQ Resource Management Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic43">Lock Management Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic48">Past PostgreSQL Version Compatibility Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic21">Query Tuning Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#ranger_related">Ranger Configuration Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#statistics_collection">Statistics Collection Parameters</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/guc_category-list.html#topic15">System Resource Consumption Parameters</a></li>
                </ul>
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              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html">Configuration Parameters</a>
                <ul>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#add_missing_from">add_missing_from</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#application_name">application_name</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#array_nulls">array_nulls</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#authentication_timeout">authentication_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#backslash_quote">backslash_quote</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#block_size">block_size</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#bonjour_name">bonjour_name</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#check_function_bodies">check_function_bodies</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#client_encoding">client_encoding</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#client_min_messages">client_min_messages</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#cpu_index_tuple_cost">cpu_index_tuple_cost</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#cpu_operator_cost">cpu_operator_cost</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#cpu_tuple_cost">cpu_tuple_cost</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#cursor_tuple_fraction">cursor_tuple_fraction</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#custom_variable_classes">custom_variable_classes</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#DateStyle">DateStyle</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#db_user_namespace">db_user_namespace</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#deadlock_timeout">deadlock_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#debug_assertions">debug_assertions</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#debug_pretty_print">debug_pretty_print</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#debug_print_parse">debug_print_parse</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#debug_print_plan">debug_print_plan</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#debug_print_prelim_plan">debug_print_prelim_plan</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#debug_print_rewritten">debug_print_rewritten</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#debug_print_slice_table">debug_print_slice_table</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#topic_fqj_4fd_kv">default_hash_table_bucket_number</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#default_statistics_target">default_statistics_target</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#default_tablespace">default_tablespace</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#default_transaction_isolation">default_transaction_isolation</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#default_transaction_read_only">default_transaction_read_only</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#dynamic_library_path">dynamic_library_path</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#effective_cache_size">effective_cache_size</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_bitmapscan">enable_bitmapscan</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_groupagg">enable_groupagg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_hashagg">enable_hashagg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_hashjoin">enable_hashjoin</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_indexscan">enable_indexscan</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_mergejoin">enable_mergejoin</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_nestloop">enable_nestloop</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_seqscan">enable_seqscan</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_sort">enable_sort</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#enable_tidscan">enable_tidscan</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#escape_string_warning">escape_string_warning</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#explain_pretty_print">explain_pretty_print</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#extra_float_digits">extra_float_digits</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#from_collapse_limit">from_collapse_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_adjust_selectivity_for_outerjoins">gp_adjust_selectivity_for_outerjoins</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_analyze_relative_error">gp_analyze_relative_error</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_autostats_mode">gp_autostats_mode</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#topic_imj_zhf_gw">gp_autostats_on_change_threshhold</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_backup_directIO">gp_backup_directIO</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_backup_directIO_read_chunk_mb">gp_backup_directIO_read_chunk_mb</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_cached_segworkers_threshold">gp_cached_segworkers_threshold</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_command_count">gp_command_count</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_connections_per_thread">gp_connections_per_thread</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_debug_linger">gp_debug_linger</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_dynamic_partition_pruning">gp_dynamic_partition_pruning</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_agg_distinct">gp_enable_agg_distinct</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_agg_distinct_pruning">gp_enable_agg_distinct_pruning</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_direct_dispatch">gp_enable_direct_dispatch</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_fallback_plan">gp_enable_fallback_plan</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_fast_sri">gp_enable_fast_sri</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_groupext_distinct_gather">gp_enable_groupext_distinct_gather</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_groupext_distinct_pruning">gp_enable_groupext_distinct_pruning</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_multiphase_agg">gp_enable_multiphase_agg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_predicate_propagation">gp_enable_predicate_propagation</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_preunique">gp_enable_preunique</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_sequential_window_plans">gp_enable_sequential_window_plans</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_sort_distinct">gp_enable_sort_distinct</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_enable_sort_limit">gp_enable_sort_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_external_enable_exec">gp_external_enable_exec</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_external_grant_privileges">gp_external_grant_privileges</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_external_max_segs">gp_external_max_segs</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_filerep_tcp_keepalives_count">gp_filerep_tcp_keepalives_count</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_filerep_tcp_keepalives_idle">gp_filerep_tcp_keepalives_idle</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_filerep_tcp_keepalives_interval">gp_filerep_tcp_keepalives_interval</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_hashjoin_tuples_per_bucket">gp_hashjoin_tuples_per_bucket</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_idf_deduplicate">gp_idf_deduplicate</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_cache_future_packets">gp_interconnect_cache_future_packets</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_default_rtt">gp_interconnect_default_rtt</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_fc_method">gp_interconnect_fc_method</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_hash_multiplier">gp_interconnect_hash_multiplier</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_min_retries_before_timeout">gp_interconnect_min_retries_before_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_min_rto">gp_interconnect_min_rto</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_queue_depth">gp_interconnect_queue_depth</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_setup_timeout">gp_interconnect_setup_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_snd_queue_depth">gp_interconnect_snd_queue_depth</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_timer_checking_period">gp_interconnect_timer_checking_period</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_timer_period">gp_interconnect_timer_period</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_interconnect_type">gp_interconnect_type</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_log_format">gp_log_format</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_max_csv_line_length">gp_max_csv_line_length</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_max_databases">gp_max_databases</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_max_filespaces">gp_max_filespaces</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_max_packet_size">gp_max_packet_size</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_max_plan_size">gp_max_plan_size</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_max_tablespaces">gp_max_tablespaces</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_motion_cost_per_row">gp_motion_cost_per_row</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_reject_percent_threshold">gp_reject_percent_threshold</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_reraise_signal">gp_reraise_signal</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_role">gp_role</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_safefswritesize">gp_safefswritesize</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_segment_connect_timeout">gp_segment_connect_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_segments_for_planner">gp_segments_for_planner</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_session_id">gp_session_id</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_set_proc_affinity">gp_set_proc_affinity</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_set_read_only">gp_set_read_only</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_statistics_pullup_from_child_partition">gp_statistics_pullup_from_child_partition</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_statistics_use_fkeys">gp_statistics_use_fkeys</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_vmem_idle_resource_timeout">gp_vmem_idle_resource_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_vmem_protect_segworker_cache_limit">gp_vmem_protect_segworker_cache_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_workfile_checksumming">gp_workfile_checksumming</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_workfile_compress_algorithm">gp_workfile_compress_algorithm</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_workfile_limit_files_per_query">gp_workfile_limit_files_per_query</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_workfile_limit_per_query">gp_workfile_limit_per_query</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#gp_workfile_limit_per_segment">gp_workfile_limit_per_segment</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_acl_type">hawq_acl_type</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_dfs_url">hawq_dfs_url</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_global_rm_type">hawq_global_rm_type</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_master_address_host">hawq_master_address_host</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_master_address_port">hawq_master_address_port</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_master_directory">hawq_master_directory</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_master_temp_directory">hawq_master_temp_directory</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_re_memory_overcommit_max">hawq_re_memory_overcommit_max</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_cluster_report">hawq_rm_cluster_report_period</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_force_alterqueue_cancel_queued_request">hawq_rm_force_alterqueue_cancel_queued_request</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_master_port">hawq_rm_master_port</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_memory_limit_perseg">hawq_rm_memory_limit_perseg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_min_resource_perseg">hawq_rm_min_resource_perseg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_nresqueue_limit">hawq_rm_nresqueue_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_nslice_perseg_limit">hawq_rm_nslice_perseg_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_nvcore_limit_perseg">hawq_rm_nvcore_limit_perseg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_nvseg_perquery_limit">hawq_rm_nvseg_perquery_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_nvseg_perquery_perseg_limit">hawq_rm_nvseg_perquery_perseg_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_nvseg_variance_amon_seg_limit">hawq_rm_nvseg_variance_amon_seg_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_rejectrequest_nseg_limit">hawq_rm_rejectrequest_nseg_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_resource_idle_timeout">hawq_rm_resource_idle_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_return_percent_on_overcommit">hawq_rm_return_percent_on_overcommit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_segment_heartbeat_interval">hawq_rm_segment_heartbeat_interval</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_segment_port">hawq_rm_segment_port</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_stmt_nvseg">hawq_rm_stmt_nvseg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_stmt_vseg_memory">hawq_rm_stmt_vseg_memory</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_tolerate_nseg_limit">hawq_rm_tolerate_nseg_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_yarn_address">hawq_rm_yarn_address</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_yarn_app_name">hawq_rm_yarn_app_name</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_yarn_queue_name">hawq_rm_yarn_queue_name</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rm_yarn_scheduler_address">hawq_rm_yarn_scheduler_address</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rps_address_port">hawq_rps_address_port</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_rps_check_local_interval">hawq_rps_check_local_interval</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_segment_address_port">hawq_segment_address_port</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#hawq_segment_directory">hawq_segment_directory</a></li>
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                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#join_collapse_limit">join_collapse_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#krb_caseins_users">krb_caseins_users</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#krb_server_keyfile">krb_server_keyfile</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#krb_srvname">krb_srvname</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#lc_collate">lc_collate</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#lc_ctype">lc_ctype</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#lc_messages">lc_messages</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#lc_monetary">lc_monetary</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#lc_numeric">lc_numeric</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#lc_time">lc_time</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#listen_addresses">listen_addresses</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#local_preload_libraries">local_preload_libraries</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_autostats">log_autostats</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_connections">log_connections</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_disconnections">log_disconnections</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_dispatch_stats">log_dispatch_stats</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_duration">log_duration</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_error_verbosity">log_error_verbosity</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_executor_stats">log_executor_stats</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_hostname">log_hostname</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_min_duration_statement">log_min_duration_statement</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_min_error_statement">log_min_error_statement</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_min_messages">log_min_messages</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_parser_stats">log_parser_stats</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_planner_stats">log_planner_stats</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_rotation_age">log_rotation_age</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_rotation_size">log_rotation_size</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_statement">log_statement</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_statement_stats">log_statement_stats</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_timezone">log_timezone</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#log_truncate_on_rotation">log_truncate_on_rotation</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_appendonly_tables">max_appendonly_tables</a></li>
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                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_files_per_process">max_files_per_process</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_fsm_pages">max_fsm_pages</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_fsm_relations">max_fsm_relations</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_function_args">max_function_args</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_identifier_length">max_identifier_length</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_index_keys">max_index_keys</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_locks_per_transaction">max_locks_per_transaction</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_prepared_transactions">max_prepared_transactions</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#max_stack_depth">max_stack_depth</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#optimizer">optimizer</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#optimizer_analyze_root_partition">optimizer_analyze_root_partition</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#optimizer_minidump">optimizer_minidump</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#optimizer_parts_to_force_sort_on_insert">optimizer_parts_to_force_sort_on_insert</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#optimizer_prefer_scalar_dqa_multistage_agg">optimizer_prefer_scalar_dqa_multistage_agg</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#password_encryption">password_encryption</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pgstat_track_activity_query_size">pgstat_track_activity_query_size</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pljava_classpath">pljava_classpath</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pljava_statement_cache_size">pljava_statement_cache_size</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pljava_release_lingering_savepoints">pljava_release_lingering_savepoints</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pljava_vmoptions">pljava_vmoptions</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#port">port</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pxf_enable_filter_pushdown">pxf_enable_filter_pushdown</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pxf_enable_stat_collection">pxf_enable_stat_collection</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pxf_remote_service_login">pxf_remote_service_login</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pxf_remote_service_secret">pxf_remote_service_secret</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pxf_service_address">pxf_service_address</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pxf_service_port">pxf_service_port</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#pxf_stat_max_fragments">pxf_stat_max_fragments</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#random_page_cost">random_page_cost</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#regex_flavor">regex_flavor</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#runaway_detector_activation_percent">runaway_detector_activation_percent</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#search_path">search_path</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#seg_max_connections">seg_max_connections</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#seq_page_cost">seq_page_cost</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#server_encoding">server_encoding</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#server_version">server_version</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#server_version_num">server_version_num</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#shared_buffers">shared_buffers</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#shared_preload_libraries">shared_preload_libraries</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#ssl">ssl</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#ssl_ciphers">ssl_ciphers</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#standard_conforming_strings">standard_conforming_strings</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#statement_timeout">statement_timeout</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#superuser_reserved_connections">superuser_reserved_connections</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#tcp_keepalives_count">tcp_keepalives_count</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#tcp_keepalives_idle">tcp_keepalives_idle</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#tcp_keepalives_interval">tcp_keepalives_interval</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#temp_buffers">temp_buffers</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#TimeZone">TimeZone</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#timezone_abbreviations">timezone_abbreviations</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#track_activities">track_activities</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#track_counts">track_counts</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#transaction_isolation">transaction_isolation</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#transaction_read_only">transaction_read_only</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#transform_null_equals">transform_null_equals</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#unix_socket_directory">unix_socket_directory</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#unix_socket_group">unix_socket_group</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#unix_socket_permissions">unix_socket_permissions</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#update_process_title">update_process_title</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#vacuum_cost_delay">vacuum_cost_delay</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#vacuum_cost_limit">vacuum_cost_limit</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#vacuum_cost_page_dirty">vacuum_cost_page_dirty</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#vacuum_cost_page_miss">vacuum_cost_page_miss</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#vacuum_freeze_min_age">vacuum_freeze_min_age</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/guc/parameter_definitions.html#xid_stop_limit">xid_stop_limit</a></li>
                </ul>
              </li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/HAWQSampleSiteConfig.html">Sample hawq-site.xml Configuration File</a></li>
            </ul>
          </li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/reference/HDFSConfigurationParameterReference.html">HDFS Configuration Reference</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/reference/HAWQEnvironmentVariables.html">Environment Variables</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/reference/CharacterSetSupportReference.html">Character Set Support Reference</a></li>
          <li><a href="/docs/userguide/2.2.0.0-incubating/reference/HAWQDataTypes.html">Data Types</a></li>
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            <ul>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/catalog_ref-tables.html">System Tables</a></li>
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              <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/catalog_ref-html.html">System Catalogs Definitions</a>
                <ul>
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                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_distribution_policy.html">gp_distribution_policy</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_global_sequence.html">gp_global_sequence</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_master_mirroring.html">gp_master_mirroring</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_persistent_database_node.html">gp_persistent_database_node</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_persistent_filespace_node.html">gp_persistent_filespace_node</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_persistent_relation_node.html">gp_persistent_relation_node</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_persistent_relfile_node.html">gp_persistent_relfile_node</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_persistent_tablespace_node.html">gp_persistent_tablespace_node</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_relfile_node.html">gp_relfile_node</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_segment_configuration.html">gp_segment_configuration</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/gp_version_at_initdb.html">gp_version_at_initdb</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_aggregate.html">pg_aggregate</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_am.html">pg_am</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_amop.html">pg_amop</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_amproc.html">pg_amproc</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_appendonly.html">pg_appendonly</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_attrdef.html">pg_attrdef</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_attribute.html">pg_attribute</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_attribute_encoding.html">pg_attribute_encoding</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_auth_members.html">pg_auth_members</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_authid.html">pg_authid</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_cast.html">pg_cast</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_class.html">pg_class</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_compression.html">pg_compression</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_constraint.html">pg_constraint</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_conversion.html">pg_conversion</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_database.html">pg_database</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_depend.html">pg_depend</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_description.html">pg_description</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_exttable.html">pg_exttable</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_filespace.html">pg_filespace</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_filespace_entry.html">pg_filespace_entry</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_index.html">pg_index</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_inherits.html">pg_inherits</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_language.html">pg_language</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_largeobject.html">pg_largeobject</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_listener.html">pg_listener</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_locks.html">pg_locks</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_namespace.html">pg_namespace</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_opclass.html">pg_opclass</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_operator.html">pg_operator</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_partition.html">pg_partition</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_partition_columns.html">pg_partition_columns</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_partition_encoding.html">pg_partition_encoding</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_partition_rule.html">pg_partition_rule</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_partition_templates.html">pg_partition_templates</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_partitions.html">pg_partitions</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_pltemplate.html">pg_pltemplate</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_proc.html">pg_proc</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_resqueue.html">pg_resqueue</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_resqueue_status.html">pg_resqueue_status</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_rewrite.html">pg_rewrite</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_roles.html">pg_roles</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_shdepend.html">pg_shdepend</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_shdescription.html">pg_shdescription</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_stat_activity.html">pg_stat_activity</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_stat_last_operation.html">pg_stat_last_operation</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_stat_last_shoperation.html">pg_stat_last_shoperation</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_stat_operations.html">pg_stat_operations</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_stat_partition_operations.html">pg_stat_partition_operations</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_statistic.html">pg_statistic</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_stats.html">pg_stats</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_tablespace.html">pg_tablespace</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_trigger.html">pg_trigger</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_type.html">pg_type</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_type_encoding.html">pg_type_encoding</a></li>
                  <li><a href="/docs/userguide/2.2.0.0-incubating/reference/catalog/pg_window.html">pg_window</a></li>
                </ul>
              </li>
            </ul>
          </li>
          <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/toolkit/hawq_toolkit.html">The hawq_toolkit Administrative Schema</a>
            <ul>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/toolkit/hawq_toolkit.html#topic2">Checking for Tables that Need Routine Maintenance</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/toolkit/hawq_toolkit.html#topic16">Viewing HAWQ Server Log Files</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/toolkit/hawq_toolkit.html#topic38">Checking Database Object Sizes and Disk Space</a></li>
            </ul>
          </li>
          <li class="has_submenu"><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/management_tools.html">HAWQ Management Tools Reference</a>
            <ul>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/analyzedb.html">analyzedb</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/createdb.html">createdb</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/createuser.html">createuser</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/dropdb.html">dropdb</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/dropuser.html">dropuser</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/gpfdist.html">gpfdist</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/gplogfilter.html">gplogfilter</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqactivate.html">hawq activate</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqcheck.html">hawq check</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqcheckperf.html">hawq checkperf</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqconfig.html">hawq config</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqextract.html">hawq extract</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqfilespace.html">hawq filespace</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqinit.html">hawq init</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqload.html">hawq load</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqregister.html">hawq register</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqrestart.html">hawq restart</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqscp.html">hawq scp</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqssh.html">hawq ssh</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqssh-exkeys.html">hawq ssh-exkeys</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqstart.html">hawq start</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqstate.html">hawq state</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/admin_utilities/hawqstop.html">hawq stop</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/pg_dump.html">pg_dump</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/pg_dumpall.html">pg_dumpall</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/pg_restore.html">pg_restore</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/psql.html">psql</a></li>
              <li><a href="/docs/userguide/2.2.0.0-incubating/reference/cli/client_utilities/vacuumdb.html">vacuumdb</a></li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
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