[TASK] Remove old TYPO3_DB based db API documentation

Documentation/ApiOverview/MainClasses/HighPriorityFunctions/Index.rst

@@ -604,120 +604,6 @@ real documentation is found in the source scripts (and the
             \TYPO3\CMS\Backend\Utility\IconUtility::getSpriteIcon('actions-document-new');
 
 
-.. _high-priority-functions-database-connection:
-
-\\TYPO3\\CMS\\Core\\Database\\DatabaseConnection
-""""""""""""""""""""""""""""""""""""""""""""""""
-
-This class is always accessed via its global instance :code:`$GLOBALS['TYPO3_DB']`.
-
-.. t3-field-list-table::
- :header-rows: 1
-
- - :Function,30: Function
-   :Comments,70: Comments
-
-
- - :Function:
-         :code:`exec_INSERTquery`
-
-         :code:`exec_UPDATEquery`
-
-         :code:`exec_DELETEquery`
-
-         :code:`exec_SELECTquery`
-   :Comments:
-         **Database Access API**
-
-         To be compatible with the DataBase Abstraction Layer (DBAL) you should always
-         use the global object :code:`$GLOBALS['TYPO3_DB']` for database access. The class
-         :code:`\TYPO3\CMS\Dbal\Database\DatabaseConnection` contains a list of MySQL wrapper functions (:code:`sql()`,
-         :code:`sql_fetch_assoc()`, etc.) which you can use almost out of the box
-         as a start. This way your extension will be able to run properly on other
-         supported DBMSes (i.e. MS SQL Server, Oracle and PostgreSQL).
-
-         .. note::
-            When writing code for the TYPO3 backend, you should rely on :ref:`TCEmain <using-tcemain>`
-            whenever possible.
-
-         **Inserting a record:**
-
-         Just fill an array with "fieldname => value" pairs and pass it to
-         :code:`exec_INSERTquery()` along with the table name in which it should be
-         inserted::
-
-            $insertFields = array(
-                'md5hash' => $md5,
-                'tstamp' => time(),
-                'type' => 2,
-                'params' => $inUrl
-            );
-            $GLOBALS['TYPO3_DB']->exec_INSERTquery(
-                'cache_md5params',
-                $insertFields
-            );
-
-         **Updating a record:**
-
-         Create an array of "fieldname => value" pairs before calling
-         :code:`exec_UPDATEquery()`. The function call is almost like inserting, but
-         you need to add a WHERE clause to target the update to the record you
-         want to update. It is the second argument you set to a value like
-         "uid=???". ::
-
-            $fields_values = array(
-                'title' => $data['sys_todos'][$key]['title'],
-                'deadline' => $data['sys_todos'][$key]['deadline'],
-                'description' => $data['sys_todos'][$key]['description'],
-                'tstamp' => time()
-            );
-            $GLOBALS['TYPO3_DB']->exec_UPDATEquery(
-                'sys_todos',
-                'uid=' . intval($key),
-                $fields_values
-            );
-
-         **Deleting a record:**
-
-         Call :code:`exec_DELETEquery()` with the tablename *and* the WHERE clause
-         selecting the record to delete::
-
-            $GLOBALS['TYPO3_DB']->exec_DELETEquery(
-                'sys_todos',
-                'uid=' . intval($key)
-            );
-
-         **Selecting a record:**
-
-         Call :code:`exec_SELECTquery()` with at least the first three arguments
-         (field list to select, table name and WHERE clause). The return value
-         is a result pointer (or object) which should be passed to
-         :code:`sql_fetch_assoc()` in a loop in order to traverse the result rows. ::
-
-            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-                '*',
-                $theTable,
-                $theField . '="' .
-                    $GLOBALS['TYPO3_DB']->quoteStr($theValue, $theTable) . '"' .
-                    $this->deleteClause($theTable) . ' ' .
-                    $whereClause,
-                $groupBy,
-                $orderBy,
-                $limit
-            );
-            $rows = array();
-            while(($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))) {
-                $rows[] = $row;
-            }
-            $GLOBALS['TYPO3_DB']->sql_free_result($res);
-            if (count($rows))    return $rows;
-
-         .. tip::
-            There are many more select methods in :code:`\TYPO3\CMS\Dbal\Database\DatabaseConnection`, look at
-            its API for details.
-
-
-
 .. _high-priority-functions-beuser:
 
 \\TYPO3\\CMS\\Core\\Authentication\\BackendUserAuthentication