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TestJoinOptimization.java
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TestJoinOptimization.java
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/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.optimizer;
import static org.junit.Assert.*;
import static org.teiid.query.processor.TestProcessor.*;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import org.teiid.api.exception.query.QueryMetadataException;
import org.teiid.api.exception.query.QueryParserException;
import org.teiid.api.exception.query.QueryResolverException;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.TeiidProcessingException;
import org.teiid.metadata.Column;
import org.teiid.metadata.KeyRecord.Type;
import org.teiid.metadata.Table;
import org.teiid.query.function.FunctionMethods;
import org.teiid.query.metadata.QueryMetadataInterface;
import org.teiid.query.metadata.TransformationMetadata;
import org.teiid.query.optimizer.TestOptimizer.ComparisonMode;
import org.teiid.query.optimizer.capabilities.BasicSourceCapabilities;
import org.teiid.query.optimizer.capabilities.CapabilitiesFinder;
import org.teiid.query.optimizer.capabilities.DefaultCapabilitiesFinder;
import org.teiid.query.optimizer.capabilities.FakeCapabilitiesFinder;
import org.teiid.query.optimizer.capabilities.SourceCapabilities.Capability;
import org.teiid.query.optimizer.relational.rules.JoinUtil;
import org.teiid.query.parser.QueryParser;
import org.teiid.query.processor.FakeDataManager;
import org.teiid.query.processor.HardcodedDataManager;
import org.teiid.query.processor.ProcessorPlan;
import org.teiid.query.processor.TestProcessor;
import org.teiid.query.processor.relational.JoinNode;
import org.teiid.query.processor.relational.RelationalNode;
import org.teiid.query.processor.relational.RelationalPlan;
import org.teiid.query.resolver.QueryResolver;
import org.teiid.query.resolver.util.ResolverVisitor;
import org.teiid.query.sql.lang.Criteria;
import org.teiid.query.sql.lang.JoinType;
import org.teiid.query.sql.symbol.Expression;
import org.teiid.query.sql.symbol.GroupSymbol;
import org.teiid.query.unittest.RealMetadataFactory;
import org.teiid.query.util.CommandContext;
import org.teiid.translator.ExecutionFactory.SupportedJoinCriteria;
import org.teiid.translator.SourceSystemFunctions;
@SuppressWarnings("nls")
public class TestJoinOptimization {
/**
* Single group criteria should get pushed and be eligible for copy criteria
*/
@Test public void testInnerJoinPushAndCopyNonJoinCriteria() {
String sql = "select bqt1.smalla.intkey, bqt2.smalla.intkey from bqt1.smalla inner join bqt2.smalla on (bqt1.smalla.intkey = bqt2.smalla.intkey and bqt2.smalla.intkey = 1)"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT bqt1.smalla.intkey FROM bqt1.smalla WHERE bqt1.smalla.intkey = 1", "SELECT bqt2.smalla.intkey FROM bqt2.smalla WHERE bqt2.smalla.intkey = 1"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
1, // Join
0, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Single group criteria should get pushed when it is on the inner side
*/
@Test public void testOuterJoinPushNonJoinCriteria() {
String sql = "select bqt1.smalla.intkey from bqt1.smalla left outer join bqt2.smalla on (bqt1.smalla.intkey = bqt2.smalla.intkey and bqt2.smalla.stringkey = 1)"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.intkey AS c_0 FROM bqt1.smalla AS g_0 ORDER BY c_0", "SELECT g_0.intkey AS c_0 FROM bqt2.smalla AS g_0 WHERE g_0.stringkey = '1' ORDER BY c_0"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // Join
1, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Single group criteria should not be pushed when it is on the outer side
*/
@Test public void testOuterJoinPushNonJoinCriteriaA() {
String sql = "select bqt1.smalla.intkey from bqt1.smalla left outer join bqt2.smalla on (bqt1.smalla.intkey = bqt2.smalla.intkey and bqt1.smalla.stringkey = 1)"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.intkey AS c_0 FROM bqt2.smalla AS g_0 ORDER BY c_0", "SELECT g_0.intkey AS c_0, g_0.stringkey AS c_1 FROM bqt1.smalla AS g_0 ORDER BY c_0"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // Join
1, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
@Test public void testOuterJoinPushNonJoinCriteria_Case5547() {
String sql = "select bqt1.smalla.intkey from bqt1.smalla left outer join bqt2.smalla on (1=1)"; //$NON-NLS-1$
String BQT1 = "BQT1"; //$NON-NLS-1$
String BQT2 = "BQT2"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
// === Must set the ORDER BY prop on the capabilities object to TRUE
caps.setCapabilitySupport(Capability.QUERY_ORDERBY, true);
capFinder.addCapabilities(BQT1, caps);
capFinder.addCapabilities(BQT2, caps);
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql,
metadata,
null,
capFinder,
new String[] {"SELECT bqt1.smalla.intkey FROM bqt1.smalla", "SELECT 1 FROM bqt2.smalla"}, true ); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
1, // NestedLoopJoinStrategy
0, // MergeJoinStrategy
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Single group criteria should not be pushed when it is used in a full outer join
* Note that the join has also degraded into a cross join rather than an outer join
*/
@Test public void testFullOuterJoinPushNonJoinCriteria() {
String sql = "select bqt1.smalla.intkey, bqt2.smalla.intkey from bqt1.smalla full outer join bqt2.smalla on (bqt1.smalla.intkey = bqt2.smalla.intkey and bqt1.smalla.stringkey = 1 and bqt2.smalla.stringkey = 1)"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.intkey AS c_0, g_0.stringkey AS c_1 FROM bqt2.smalla AS g_0 ORDER BY c_0", "SELECT g_0.intkey AS c_0, g_0.stringkey AS c_1 FROM bqt1.smalla AS g_0 ORDER BY c_0"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // Join
1, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
@Test public void testFullOuterJoinPredicatePlacement() throws TeiidComponentException, TeiidProcessingException {
String sql = "select b1.intkey, b2.intkey from (select * from bqt1.smalla where bqt1.smalla.stringkey = 'a') b1 full outer join (select * from bqt1.smallb where bqt1.smallb.stringkey = 'b') b2 on (b1.intkey = b2.intkey)"; //$NON-NLS-1$
BasicSourceCapabilities bsc = TestOptimizer.getTypicalCapabilities();
bsc.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER_FULL, true);
bsc.setCapabilitySupport(Capability.QUERY_FROM_INLINE_VIEWS, false);
TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(),
new String[] {"SELECT g_0.IntKey FROM BQT1.SmallA AS g_0 WHERE g_0.StringKey = 'a'", "SELECT g_0.IntKey FROM BQT1.SmallB AS g_0 WHERE g_0.StringKey = 'b'"}, new DefaultCapabilitiesFinder(bsc), ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$ //$NON-NLS-2$
}
@Test public void testEvaluatableSubqueryInOn() throws TeiidComponentException, TeiidProcessingException {
String sql = "select b1.intkey, b2.intkey from bqt1.smalla b1 left outer join bqt1.smallb b2 on (b1.intkey = b2.intkey and b2.stringkey = (select stringkey from bqt1.mediuma))"; //$NON-NLS-1$
BasicSourceCapabilities bsc = TestOptimizer.getTypicalCapabilities();
bsc.setCapabilitySupport(Capability.QUERY_FROM_INLINE_VIEWS, true);
bsc.setCapabilitySupport(Capability.CRITERIA_ON_SUBQUERY, false);
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(),
new String[] {"SELECT g_0.IntKey, g_1.IntKey FROM BQT1.SmallA AS g_0 LEFT OUTER JOIN BQT1.SmallB AS g_1 ON g_0.IntKey = g_1.IntKey AND g_1.StringKey = (SELECT g_0.StringKey FROM BQT1.MediumA AS g_0)"}, new DefaultCapabilitiesFinder(bsc), ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$ //$NON-NLS-2$
HardcodedDataManager hdm = new HardcodedDataManager();
hdm.addData("SELECT g_0.StringKey FROM BQT1.MediumA AS g_0", Arrays.asList("b"));
hdm.addData("SELECT g_0.IntKey, g_1.IntKey FROM BQT1.SmallA AS g_0 LEFT OUTER JOIN BQT1.SmallB AS g_1 ON g_0.IntKey = g_1.IntKey AND g_1.StringKey = 'b'", Arrays.asList(1, 1));
TestProcessor.helpProcess(plan, hdm, new List<?>[] {Arrays.asList(1, 1)});
}
/**
* @throws TeiidComponentException
* @throws TeiidProcessingException
*/
@Test public void testEvaluatableSubqueryInOn1() throws TeiidComponentException, TeiidProcessingException {
String sql = "select b1.intkey, b2.intkey from bqt1.smalla b1 left outer join bqt1.smallb b2 on (b1.intkey = b2.intkey and b2.stringkey in (select stringkey from bqt1.mediuma))"; //$NON-NLS-1$
BasicSourceCapabilities bsc = TestOptimizer.getTypicalCapabilities();
bsc.setCapabilitySupport(Capability.QUERY_FROM_INLINE_VIEWS, true);
bsc.setCapabilitySupport(Capability.CRITERIA_ON_SUBQUERY, false);
bsc.setCapabilitySupport(Capability.CRITERIA_IN_SUBQUERY, true);
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(),
new String[] {"SELECT g_0.IntKey AS c_0 FROM BQT1.SmallA AS g_0 ORDER BY c_0",
"SELECT g_0.IntKey AS c_0 FROM BQT1.SmallB AS g_0 WHERE g_0.StringKey IN (SELECT g_1.StringKey FROM BQT1.MediumA AS g_1) ORDER BY c_0"}, new DefaultCapabilitiesFinder(bsc), ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$ //$NON-NLS-2$
HardcodedDataManager hdm = new HardcodedDataManager();
hdm.addData("SELECT g_0.IntKey AS c_0 FROM BQT1.SmallA AS g_0 ORDER BY c_0", Arrays.asList(1));
hdm.addData("SELECT g_0.IntKey AS c_0 FROM BQT1.SmallB AS g_0 WHERE g_0.StringKey IN (SELECT g_1.StringKey FROM BQT1.MediumA AS g_1) ORDER BY c_0", Arrays.asList(1));
TestProcessor.helpProcess(plan, hdm, new List<?>[] {Arrays.asList(1, 1)});
}
/**
* Copy criteria should still work here even though the join criteria has an implicit type conversion because
* the equality operation on the select criteria can be used.
*/
@Test public void testCopyCriteriaWithFunction1() {
String sql = "select bqt1.smalla.intkey, bqt2.smalla.intkey from bqt1.smalla, bqt2.smalla where bqt1.smalla.stringkey = bqt2.smalla.intkey and bqt2.smalla.intkey = 1"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT bqt1.smalla.intkey FROM bqt1.smalla WHERE bqt1.smalla.stringkey = '1'", "SELECT bqt2.smalla.intkey FROM bqt2.smalla WHERE bqt2.smalla.intkey = 1"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
1, // Join
0, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Copy criteria should not work here as the join criteria has an implicit convert and the where criteria is a non-equality predicate
*/
@Test public void testCopyCriteriaWithFunction2() {
String sql = "select bqt1.smalla.intkey, bqt2.smalla.intkey from bqt1.smalla, bqt2.smalla where bqt1.smalla.stringkey = bqt2.smalla.intkey and bqt2.smalla.intkey <> 1"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.intkey FROM bqt2.smalla AS g_0 WHERE g_0.intkey <> 1", "SELECT g_0.stringkey AS c_0, g_0.intkey AS c_1 FROM bqt1.smalla AS g_0 ORDER BY c_0"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // Join
1, // MergeJoin
0, // Null
0, // PlanExecution
2, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
@Test public void testCopyCriteriaWithFunction3() throws TeiidComponentException, TeiidProcessingException {
String sql = "select bqt1.smalla.intkey, bqt1.smallb.intkey from bqt1.smalla, bqt1.smallb where bqt1.smalla.stringkey = bqt1.smallb.intkey and bqt1.smallb.intkey = 1"; //$NON-NLS-1$
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.IntKey, g_1.IntKey FROM BQT1.SmallA AS g_0, BQT1.SmallB AS g_1 WHERE (g_0.StringKey = '1') AND (g_1.IntKey = 1)"}, new DefaultCapabilitiesFinder(caps), ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
caps.setSourceProperty(Capability.JOIN_CRITERIA_ALLOWED, SupportedJoinCriteria.THETA);
TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.IntKey FROM BQT1.SmallA AS g_0 WHERE g_0.StringKey = '1'", "SELECT g_0.IntKey FROM BQT1.SmallB AS g_0 WHERE g_0.IntKey = 1"}, new DefaultCapabilitiesFinder(caps), ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* The intkey criteria should not be copied above to bqt1.smalla since the criteria is coming from the inner side in the join below
*/
@Test public void testInvalidCopyCriteria() {
String sql = "select bqt1.smalla.intkey from bqt1.smalla inner join (select bqt3.smalla.intkey from bqt2.smalla left outer join bqt3.smalla on bqt2.smalla.intkey = bqt3.smalla.intkey and bqt3.smalla.intkey = 1) foo on bqt1.smalla.intkey = foo.intkey"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT 1 FROM BQT2.SmallA AS g_0 WHERE g_0.IntKey = 1", "SELECT 1 FROM BQT3.SmallA AS g_0 WHERE g_0.IntKey = 1", "SELECT g_0.IntKey FROM BQT1.SmallA AS g_0 WHERE g_0.IntKey = 1"}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
TestOptimizer.checkNodeTypes(plan, new int[] {
3, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
2, // Join
0, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/*
* Note that the criteria does not get copied to the outer side.
*/
@Test public void testCopyCriteriaFromInnerSide() throws Exception {
String sql = "select bqt1.smalla.intkey from bqt1.smalla left outer join (select bqt3.smalla.intkey from bqt3.smalla where bqt3.smalla.intkey = 1) foo on bqt1.smalla.intkey = foo.intkey"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.IntKey FROM BQT1.SmallA AS g_0", "SELECT 1 FROM BQT3.SmallA AS g_0 WHERE g_0.IntKey = 1"}, ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
1, // Join
0, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Check to ensure that the full outer join does not get merged since the where criteria cannot be moved
*/
@Test public void testFullOuterJoinPreservation() {
String sql = "select bqt2.mediumb.intkey from bqt2.mediumb full outer join (select bqt2.smallb.intkey from bqt2.smalla left outer join bqt2.smallb on bqt2.smalla.intkey = bqt2.smallb.intkey where bqt2.smalla.stringkey = 1) foo on bqt2.mediumb.intkey = foo.intkey"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(),
new String[] {"SELECT g_1.intkey FROM bqt2.smalla AS g_0 LEFT OUTER JOIN bqt2.smallb AS g_1 ON g_0.intkey = g_1.intkey WHERE g_0.stringkey = '1'", "SELECT g_0.intkey AS c_0 FROM bqt2.mediumb AS g_0 ORDER BY c_0"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // Join
1, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Same as above but with a 0 group criteria
*/
@Test public void testFullOuterJoinPreservation1() {
String sql = "select bqt2.mediumb.intkey from bqt2.mediumb full outer join (select bqt2.smallb.intkey from bqt2.smalla inner join bqt2.smallb on bqt2.smalla.intkey = bqt2.smallb.intkey where ? = 1) foo on bqt2.mediumb.intkey = foo.intkey"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.intkey AS c_0 FROM bqt2.mediumb AS g_0 ORDER BY c_0", "SELECT g_1.intkey FROM bqt2.smalla AS g_0, bqt2.smallb AS g_1 WHERE (g_0.intkey = g_1.intkey) AND (? = 1)"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // Join
1, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Same as above but with a left outer join
*/
@Test public void testOuterJoinPreservation() {
String sql = "select bqt2.mediumb.intkey from bqt2.mediumb left outer join (select bqt2.smallb.intkey from bqt2.smalla inner join bqt2.smallb on bqt2.smalla.intkey = bqt2.smallb.intkey where ? = 1) foo on bqt2.mediumb.intkey = foo.intkey"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT g_0.intkey AS c_0 FROM bqt2.mediumb AS g_0 ORDER BY c_0", "SELECT g_1.intkey FROM bqt2.smalla AS g_0, bqt2.smallb AS g_1 WHERE (g_0.intkey = g_1.intkey) AND (? = 1)"}); //$NON-NLS-1$ //$NON-NLS-2$
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // Join
1, // MergeJoin
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
@Test public void testCopyCriteriaCreatesFalseCriteria() {
String sql = "select bqt1.smalla.intkey, bqt2.smalla.intkey from bqt1.smalla, bqt2.smalla where bqt1.smalla.stringkey = bqt2.smalla.intkey and bqt2.smalla.intkey = 1 and bqt1.smalla.stringkey = '2'"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {});
TestOptimizer.checkNodeTypes(plan, TestRuleRaiseNull.FULLY_NULL);
}
@Test public void testPushNonJoinCriteriaWithFalse() {
String sql = "select bqt1.smalla.intkey, bqt2.smalla.intkey from bqt1.smalla left outer join bqt2.smalla on (bqt1.smalla.stringkey = bqt2.smalla.intkey and bqt2.smalla.intkey = null)"; //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), new String[] {"SELECT bqt1.smalla.intkey FROM bqt1.smalla"}); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
@Test public void testPushMultiGroupJoinCriteria() throws Exception {
String sql = "select bqt1.smalla.intkey, bqt1.smallb.intkey from bqt1.smalla right outer join (bqt1.smallb cross join (bqt1.mediuma cross join bqt1.mediumb)) on bqt1.smalla.stringkey = bqt1.smallb.stringkey" //$NON-NLS-1$
+" where bqt1.smallb.intkey + bqt1.mediuma.intkey + bqt1.mediumb.intkey = 1"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
caps.setFunctionSupport("+", true); //$NON-NLS-1$
capFinder.addCapabilities("BQT1", caps); //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), null, capFinder,
new String[] {"SELECT g_3.IntKey, g_0.IntKey FROM ((BQT1.SmallB AS g_0 CROSS JOIN BQT1.MediumA AS g_1) INNER JOIN BQT1.MediumB AS g_2 ON ((g_0.IntKey + g_1.IntKey) + g_2.IntKey) = 1) LEFT OUTER JOIN BQT1.SmallA AS g_3 ON g_3.StringKey = g_0.StringKey"}, ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* Since the multigroup criteria spans the inner side, it should not be pushed.
*/
@Test public void testPushMultiGroupJoinCriteria1() {
String sql = "select bqt1.smalla.intkey, bqt1.smallb.intkey from bqt1.smalla right outer join (bqt1.smallb cross join (bqt1.mediuma cross join bqt1.mediumb)) on bqt1.smalla.stringkey = bqt1.smallb.stringkey" //$NON-NLS-1$
+" where bqt1.smalla.intkey + bqt1.mediuma.intkey + bqt1.mediumb.intkey is null"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
caps.setFunctionSupport("+", true); //$NON-NLS-1$
capFinder.addCapabilities("BQT1", caps); //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), null, capFinder,
new String[] {"SELECT g_3.intkey, g_0.intkey FROM ((bqt1.smallb AS g_0 CROSS JOIN bqt1.mediuma AS g_1) CROSS JOIN bqt1.mediumb AS g_2) LEFT OUTER JOIN bqt1.smalla AS g_3 ON g_3.stringkey = g_0.stringkey WHERE ((g_3.intkey + g_1.intkey) + g_2.intkey) IS NULL"}, true); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* Since the multigroup criteria is not null dependent, it should get pushed.
*/
@Test public void testPushMultiGroupJoinCriteria2() {
String sql = "select bqt1.smalla.intkey, bqt1.smallb.intkey from bqt1.smalla right outer join (bqt1.smallb cross join (bqt1.mediuma cross join bqt1.mediumb)) on bqt1.smalla.stringkey = bqt1.smallb.stringkey" //$NON-NLS-1$
+" where bqt1.smalla.intkey + bqt1.mediuma.intkey + bqt1.mediumb.intkey = 1"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
caps.setFunctionSupport("+", true); //$NON-NLS-1$
capFinder.addCapabilities("BQT1", caps); //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), null, capFinder,
new String[] {"SELECT g_3.intkey, g_2.intkey FROM bqt1.mediuma AS g_0, bqt1.mediumb AS g_1, bqt1.smallb AS g_2, bqt1.smalla AS g_3 WHERE (g_3.stringkey = g_2.stringkey) AND (((g_3.intkey + g_0.intkey) + g_1.intkey) = 1)"}, true); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* Having criteria should not be considered as regular criteria (unless it contains no aggregate expressions).
*/
@Test public void testHavingCriteriaNotUsedAsJoinCriteria() {
String sql = "select bqt1.smalla.intkey, max(bqt1.smallb.intkey) from bqt1.smalla, bqt1.smallb where bqt1.smalla.intkey = bqt1.smallb.intnum group by bqt1.smallb.intkey, bqt1.smalla.intkey having max(bqt1.smallb.intkey) = bqt1.smalla.intkey"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
caps.setCapabilitySupport(Capability.QUERY_GROUP_BY, true);
caps.setCapabilitySupport(Capability.QUERY_HAVING, true);
caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_MAX, true);
capFinder.addCapabilities("BQT1", caps); //$NON-NLS-1$
// Plan query
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), null, capFinder,
new String[] {"SELECT bqt1.smalla.intkey, MAX(bqt1.smallb.intkey) FROM bqt1.smalla, bqt1.smallb WHERE bqt1.smalla.intkey = bqt1.smallb.intnum GROUP BY bqt1.smallb.intkey, bqt1.smalla.intkey HAVING MAX(bqt1.smallb.intkey) = bqt1.smalla.intkey"}, true); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* Ensure that subqueries not initially pushable to the source still get replaced
*/
@Test public void testSubqueryReplacement() {
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
caps.setCapabilitySupport(Capability.CRITERIA_IN, true);
caps.setCapabilitySupport(Capability.CRITERIA_IN_SUBQUERY, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_INNER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER_FULL, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_SELFJOIN, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_GROUP_ALIAS, true);
capFinder.addCapabilities("pm1", caps); //$NON-NLS-1$
QueryMetadataInterface metadata = RealMetadataFactory.example1Cached();
ProcessorPlan plan = TestOptimizer.helpPlan("select Y.e1, Y.e2 FROM vm1.g1 X left outer join vm1.g1 Y on Y.e1 = X.e1 where Y.e3 in (select e3 FROM vm1.g1) or Y.e3 IS NULL", metadata, null, capFinder, //$NON-NLS-1$
new String[]{"SELECT pm1.g1.e1, pm1.g1.e2 FROM pm1.g1 AS g1__1 LEFT OUTER JOIN pm1.g1 ON pm1.g1.e1 = g1__1.e1 WHERE (pm1.g1.e3 IN (SELECT pm1.g1.e3 FROM pm1.g1)) OR (pm1.g1.e3 IS NULL)"}, true); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
@Test public void testRulePushNonJoinCriteriaPreservesOuterJoin() throws Exception {
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
String sql = "select b.intkey from (select intkey from bqt1.smalla) a left outer join (select intkey from bqt1.smallb) b on (1 = 1)"; //$NON-NLS-1$
ProcessorPlan plan = TestOptimizer.helpPlan(sql, metadata,
new String[]{"SELECT g_1.IntKey FROM BQT1.SmallA AS g_0 LEFT OUTER JOIN BQT1.SmallB AS g_1 ON 1 = 1"}, TestOptimizer.ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
@Test public void testOuterToInnerJoinConversion() {
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
String sql = "select bqt1.smalla.intkey from bqt1.smalla left outer join bqt1.smallb on (bqt1.smalla.intkey = bqt1.smallb.intkey) where bqt1.smallb.intnum = 1"; //$NON-NLS-1$
TestOptimizer.helpPlan(sql, metadata, new String[]{"SELECT bqt1.smalla.intkey FROM bqt1.smalla, bqt1.smallb WHERE (bqt1.smalla.intkey = bqt1.smallb.intkey) AND (bqt1.smallb.intnum = 1)"}); //$NON-NLS-1$
}
//same as above, but with a right outer join
@Test public void testOuterToInnerJoinConversion1() {
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
String sql = "select bqt1.smalla.intkey from bqt1.smalla right outer join bqt1.smallb on (bqt1.smalla.intkey = bqt1.smallb.intkey) where bqt1.smalla.intnum = 1"; //$NON-NLS-1$
TestOptimizer.helpPlan(sql, metadata, new String[]{"SELECT bqt1.smalla.intkey FROM bqt1.smallb, bqt1.smalla WHERE (bqt1.smalla.intkey = bqt1.smallb.intkey) AND (bqt1.smalla.intnum = 1)"}); //$NON-NLS-1$
}
@Test public void testOuterToInnerJoinConversion2() {
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
String sql = "select bqt1.smalla.intkey from bqt1.smalla full outer join bqt1.smallb on (bqt1.smalla.intkey = bqt1.smallb.intkey) where bqt1.smallb.intnum = 1"; //$NON-NLS-1$
TestOptimizer.helpPlan(sql, metadata, new String[]{"SELECT bqt1.smalla.intkey FROM bqt1.smallb LEFT OUTER JOIN bqt1.smalla ON bqt1.smalla.intkey = bqt1.smallb.intkey WHERE bqt1.smallb.intnum = 1"}); //$NON-NLS-1$
}
@Test public void testOuterToInnerJoinConversion3() {
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
String sql = "select bqt1.smalla.intkey from bqt1.smalla full outer join bqt1.smallb on (bqt1.smalla.intkey = bqt1.smallb.intkey) where bqt1.smalla.intnum = 1"; //$NON-NLS-1$
TestOptimizer.helpPlan(sql, metadata, new String[]{"SELECT bqt1.smalla.intkey FROM bqt1.smalla LEFT OUTER JOIN bqt1.smallb ON bqt1.smalla.intkey = bqt1.smallb.intkey WHERE bqt1.smalla.intnum = 1"}); //$NON-NLS-1$
}
/**
* non-dependent criteria on each side of a full outer creates an inner join
*/
@Test public void testOuterToInnerJoinConversion4() {
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
String sql = "select bqt1.smalla.intkey from bqt1.smalla full outer join bqt1.smallb on (bqt1.smalla.intkey = bqt1.smallb.intkey) where bqt1.smalla.intnum = bqt1.smallb.intnum"; //$NON-NLS-1$
TestOptimizer.helpPlan(sql, metadata, new String[]{"SELECT bqt1.smalla.intkey FROM bqt1.smalla, bqt1.smallb WHERE (bqt1.smalla.intkey = bqt1.smallb.intkey) AND (bqt1.smalla.intnum = bqt1.smallb.intnum)"}); //$NON-NLS-1$
}
/**
* Since concat2 is null dependent the join will not be changed
*/
@Test public void testOuterToInnerJoinConversionNullDependent() {
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_INNER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER_FULL, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_SELFJOIN, true);
caps.setFunctionSupport("concat2", true); //$NON-NLS-1$
capFinder.addCapabilities("BQT1", caps); //$NON-NLS-1$
QueryMetadataInterface metadata = RealMetadataFactory.exampleBQTCached();
String sql = "select bqt1.smalla.intkey from bqt1.smalla left outer join bqt1.smallb on (bqt1.smalla.intkey = bqt1.smallb.intkey) where concat2(bqt1.smallb.intnum, '1') = 1"; //$NON-NLS-1$
TestOptimizer.helpPlan(sql, metadata, null, capFinder, new String[]{"SELECT bqt1.smallb.intnum, bqt1.smalla.intkey FROM bqt1.smalla LEFT OUTER JOIN bqt1.smallb ON bqt1.smalla.intkey = bqt1.smallb.intkey"}, TestOptimizer.SHOULD_SUCCEED); //$NON-NLS-1$
}
@Test public void testInlineViewToHaving() {
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
caps.setCapabilitySupport(Capability.QUERY_GROUP_BY, true);
caps.setCapabilitySupport(Capability.QUERY_HAVING, true);
caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_MAX, true);
capFinder.addCapabilities("BQT1", caps); //$NON-NLS-1$
String sql = "select x.y, x.intkey from (select max(intnum) y, intkey from bqt1.smalla group by intkey) x where x.y = 1"; //$NON-NLS-1$
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(), null, capFinder,
new String[]{"SELECT MAX(intnum), intkey FROM bqt1.smalla GROUP BY intkey HAVING MAX(intnum) = 1"}, TestOptimizer.SHOULD_SUCCEED); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* <p>In RuleBreakMultiJoin terminology:
* If any of the regions contains a group with any unsatisfied access patterns, one
* of those access patterns could be satisfied by arranging for a dependent join,
* provided that group has join criteria which covers the column(s) in an access
* pattern, and which joins the group to group(s) in other region(s). The task, then,
* is to ensure that an ordering isn't picked which makes such a dependent join
* impossible.</p>
*
* <p>A physical group can have zero or more access patterns; each access pattern can have one
* or more columns. So a group could implicitly be dependent on one or more other physical
* groups in one or more other regions. A table can be used to illustrate the potential
* complexity of access patterns:
* <pre>
* Region with | Target
* Access Patterns| Regions
* -------------------------
* Reg3 | Reg1, Reg2
* Reg3 | Reg4
* Reg1 | Reg2
* Reg4 | Reg3
* </pre></p>
*
* This tests now passes with RulePlanJoins
*/
@Test public void testPathologicalAccessPatternCaseCase2976Defect19018() throws Exception{
TransformationMetadata metadata = RealMetadataFactory.example1();
// add single access pattern to pm1.g4 containing elements e1, e2, and e3
Table pm4g1 = metadata.getGroupID("pm4.g1");
List<Column> cols = new ArrayList<Column>(pm4g1.getColumns());
cols.remove(2);
RealMetadataFactory.createKey(Type.AccessPattern, "pm4.g1.ap1", pm4g1, cols);
String sql = "SELECT pm1.g1.e1, pm2.g1.e1, pm4.g1.e1 " +//$NON-NLS-1$
"FROM pm1.g1, pm2.g1, pm4.g1 WHERE " +//$NON-NLS-1$
"pm1.g1.e1 = pm4.g1.e1 AND pm2.g1.e2 = pm4.g1.e2 AND pm1.g1.e4 = pm2.g1.e4 " +//$NON-NLS-1$
"AND pm4.g1.e4 = 3.2";//$NON-NLS-1$
String[] expected = new String[] {"SELECT g_0.e4 AS c_0, g_0.e1 AS c_1 FROM pm1.g1 AS g_0 ORDER BY c_0", //$NON-NLS-1$
"SELECT g_0.e1 AS c_0, g_0.e2 AS c_1 FROM pm4.g1 AS g_0 WHERE (g_0.e4 = 3.2) AND (g_0.e1 IN (<dependent values>)) AND (g_0.e2 IN (<dependent values>)) ORDER BY c_0, c_1", //$NON-NLS-1$
"SELECT g_0.e4 AS c_0, g_0.e2 AS c_1, g_0.e1 AS c_2 FROM pm2.g1 AS g_0 ORDER BY c_0",//$NON-NLS-1$
};
ProcessorPlan plan = TestOptimizer.helpPlan(sql, metadata, expected, TestOptimizer.ComparisonMode.EXACT_COMMAND_STRING);
TestOptimizer.checkNodeTypes(plan, new int[] {
2, // Access
1, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // NestedLoopJoinStrategy
2, // MergeJoinStrategy
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* non-null dependent criteria should get pushed down
*/
@Test public void testPushMultiGroupCriteriaOuterJoin() {
String sql = "select m.intkey, m.intnum, s.intkey, s.intnum from BQT2.mediuma m left outer join BQT2.smalla s on m.intkey = s.intkey where not (m.intkey + s.intnum = 26)"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = new BasicSourceCapabilities();
caps.setCapabilitySupport(Capability.CRITERIA_COMPARE_EQ, true);
caps.setCapabilitySupport(Capability.CRITERIA_COMPARE_ORDERED, true);
caps.setCapabilitySupport(Capability.CRITERIA_NOT, true);
caps.setCapabilitySupport(Capability.CRITERIA_IN, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_INNER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER_FULL, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_SELFJOIN, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_GROUP_ALIAS, true);
caps.setCapabilitySupport(Capability.QUERY_ORDERBY, true);
caps.setFunctionSupport("+", true); //$NON-NLS-1$
capFinder.addCapabilities("BQT2", caps); //$NON-NLS-1$
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.exampleBQTCached(),
null, capFinder,
new String[] {
"SELECT m.intkey, m.intnum, s.intkey, s.intnum FROM BQT2.mediuma AS m, BQT2.smalla AS s WHERE (m.intkey = s.intkey) AND (NOT ((m.intkey + s.intnum) = 26))" }, //$NON-NLS-1$
TestOptimizer.SHOULD_SUCCEED);
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* Assumes that pm1.g1 is the only inner group
*/
private void helpTestNullDependentVisitor(String critSQL,
boolean dependent) throws QueryParserException,
QueryResolverException,
QueryMetadataException,
TeiidComponentException {
List<GroupSymbol> innerGroups = new ArrayList<GroupSymbol>();
innerGroups.add(new GroupSymbol("pm1.g1")); //$NON-NLS-1$
Criteria crit = QueryParser.getQueryParser().parseCriteria(critSQL);
QueryResolver.resolveCriteria(crit, RealMetadataFactory.example1Cached());
assertEquals(dependent, JoinUtil.isNullDependent(RealMetadataFactory.example1Cached(), innerGroups, crit));
}
private void helpTestNullDependent(String expressionSQL,
boolean dependent) throws QueryParserException,
QueryResolverException,
QueryMetadataException,
TeiidComponentException {
List<GroupSymbol> innerGroups = new ArrayList<GroupSymbol>();
innerGroups.add(new GroupSymbol("pm1.g1")); //$NON-NLS-1$
Expression expr = QueryParser.getQueryParser().parseExpression(expressionSQL);
ResolverVisitor.resolveLanguageObject(expr, RealMetadataFactory.example1Cached());
assertEquals(dependent, JoinUtil.isNullDependent(RealMetadataFactory.example1Cached(), innerGroups, expr));
}
@Test public void testNullDependentVisitor() throws Exception {
helpTestNullDependentVisitor("nvl(pm1.g1.e1, 1) = 1", true); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor1() throws Exception {
helpTestNullDependentVisitor("ifnull(pm1.g1.e1, 1) = 1", true); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor2() throws Exception {
helpTestNullDependentVisitor("rand(pm1.g1.e2) = 1", true); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor3() throws Exception {
helpTestNullDependentVisitor("concat2(pm1.g1.e1, pm1.g1.e2) = '1'", false); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor4() throws Exception {
helpTestNullDependentVisitor("nvl(pm1.g2.e1, 1) = 1", true); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor5() throws Exception {
helpTestNullDependentVisitor("pm1.g1.e1 is null", true); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor6() throws Exception {
helpTestNullDependentVisitor("pm1.g1.e1 is not null", false); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor7() throws Exception {
helpTestNullDependentVisitor("pm1.g2.e1 is not null", true); //$NON-NLS-1$
}
//this is an important test, the or causes this criteria to be null dependent
@Test public void testNullDependentVisitor8() throws Exception {
helpTestNullDependentVisitor("pm1.g1.e1 = 1 or pm1.g2.e1 = 1", true); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor9() throws Exception {
helpTestNullDependentVisitor("pm1.g1.e1 = 1 or pm1.g1.e2 = 2", false); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor10() throws Exception {
helpTestNullDependentVisitor("pm1.g1.e1 in (1, pm1.g2.e1)", false); //$NON-NLS-1$
}
@Test public void testNullDependentVisitor11() throws Exception {
helpTestNullDependentVisitor("pm1.g2.e1 in (1, pm1.g1.e1)", true); //$NON-NLS-1$
}
@Test public void testIsNullDependent() throws Exception {
helpTestNullDependent("pm1.g1.e2 + 1", false); //$NON-NLS-1$
}
@Test public void testIsNullDependent1() throws Exception {
helpTestNullDependent("pm1.g2.e2 + 1", true); //$NON-NLS-1$
}
/**
* The criteria will still get pushed to appropriate location, and
* the other side of the join will be removed
*/
@Test public void testCriteriaPushedWithUnionJoin() throws Exception {
String sql = "select * from pm1.g1 union join pm1.g2 where g1.e1 = 1"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = new BasicSourceCapabilities();
caps.setCapabilitySupport(Capability.CRITERIA_COMPARE_EQ, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_INNER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_GROUP_ALIAS, true);
capFinder.addCapabilities("pm1", caps); //$NON-NLS-1$
ProcessorPlan plan = TestOptimizer.helpPlan(sql, RealMetadataFactory.example1Cached(),
null, capFinder,
new String[] {
"SELECT pm1.g1.e1, pm1.g1.e2, pm1.g1.e3, pm1.g1.e4 FROM pm1.g1 WHERE pm1.g1.e1 = '1'" }, //$NON-NLS-1$
TestOptimizer.SHOULD_SUCCEED);
TestOptimizer.checkNodeTypes(plan, new int[] {
1, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // NestedLoopJoinStrategy
0, // MergeJoinStrategy
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* union joins allow RuleRemoveVirtual to still take effect
*/
@Test public void testCriteriaPushedWithUnionJoin1() throws Exception {
String sql = "select vm1.g1.e1 from vm1.g1 union join vm1.g2 where g2.e1 = 1"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = new BasicSourceCapabilities();
caps.setCapabilitySupport(Capability.CRITERIA_COMPARE_EQ, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_INNER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER_FULL, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_SELFJOIN, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_GROUP_ALIAS, true);
capFinder.addCapabilities("pm1", caps); //$NON-NLS-1$
QueryMetadataInterface metadata = RealMetadataFactory.example1Cached();
ProcessorPlan plan = TestOptimizer.helpPlan(sql, metadata,
null, capFinder,
new String[] {
"SELECT g_0.e1 FROM pm1.g1 AS g_0, pm1.g2 AS g_1 WHERE (g_0.e1 = g_1.e1) AND (g_0.e1 = '1') AND (g_1.e1 = '1')" }, //$NON-NLS-1$
ComparisonMode.EXACT_COMMAND_STRING);
TestOptimizer.checkNodeTypes(plan, new int[] {
1, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // NestedLoopJoinStrategy
0, // MergeJoinStrategy
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* null-dependent expressions should prevent merging of virtual layers
*/
@Test public void testNullDependentPreventsMerge() throws Exception {
String sql = "select x from pm1.g1 left outer join (select nvl(e2, 1) x from pm1.g2) y on e2 = x"; //$NON-NLS-1$
FakeCapabilitiesFinder capFinder = new FakeCapabilitiesFinder();
BasicSourceCapabilities caps = new BasicSourceCapabilities();
caps.setCapabilitySupport(Capability.QUERY_SELECT_EXPRESSION, true);
caps.setCapabilitySupport(Capability.CRITERIA_COMPARE_EQ, true);
caps.setCapabilitySupport(Capability.CRITERIA_COMPARE_EQ, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_INNER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_JOIN_OUTER, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_GROUP_ALIAS, true);
caps.setCapabilitySupport(Capability.QUERY_ORDERBY, true);
caps.setCapabilitySupport(Capability.QUERY_FROM_INLINE_VIEWS, true);
caps.setFunctionSupport(SourceSystemFunctions.IFNULL, true);
capFinder.addCapabilities("pm1", caps); //$NON-NLS-1$
QueryMetadataInterface metadata = RealMetadataFactory.example1Cached();
ProcessorPlan plan = TestOptimizer.helpPlan(sql, metadata,
null, capFinder,
new String[] {
"SELECT v_0.c_0 FROM pm1.g1 AS g_0 LEFT OUTER JOIN (SELECT ifnull(g_1.e2, 1) AS c_0 FROM pm1.g2 AS g_1) AS v_0 ON g_0.e2 = v_0.c_0" }, //$NON-NLS-1$
TestOptimizer.ComparisonMode.EXACT_COMMAND_STRING);
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
@Test public void testPreserveHint() throws Exception {
String sql = "select pm1.g1.e1 from /*+ preserve */ (pm1.g1 left outer join pm1.g2 on g1.e2 = g2.e2) where pm1.g2.e1 = 'a'"; //$NON-NLS-1$
assertEquals("SELECT pm1.g1.e1 FROM /*+ PRESERVE */ (pm1.g1 LEFT OUTER JOIN pm1.g2 ON g1.e2 = g2.e2) WHERE pm1.g2.e1 = 'a'", QueryParser.getQueryParser().parseCommand(sql).toString());
QueryMetadataInterface metadata = RealMetadataFactory.example1Cached();
ProcessorPlan plan = TestOptimizer.helpPlan(sql, metadata,
null, TestOptimizer.getGenericFinder(true),
new String[] {
"SELECT g_0.e1 FROM pm1.g1 AS g_0 LEFT OUTER JOIN pm1.g2 AS g_1 ON g_0.e2 = g_1.e2 WHERE g_1.e1 = 'a'" }, //$NON-NLS-1$
TestOptimizer.ComparisonMode.EXACT_COMMAND_STRING);
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* RuleCopyCriteria will remove the first join criteria and the source doesn't support the * function. However we still
* want the join to be pushed since it originally contained proper criteria.
*/
@Test public void testCopyCriteriaJoinPushed() throws Exception {
String sql = "select pm1.g1.e1 from pm1.g1, pm1.g2 where pm1.g1.e1 = pm1.g2.e1 and pm1.g1.e1 = 5 and pm1.g1.e2 * 5 = pm1.g2.e2"; //$NON-NLS-1$
QueryMetadataInterface metadata = RealMetadataFactory.example1Cached();
ProcessorPlan plan = TestOptimizer.helpPlan(sql,metadata,