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   1. drupal7

Join against another table in the database.

This method does the "hard" work of queuing up a table to be joined against. In some cases, that may include dipping into the Schema API to find the necessary fields on which to join.

Übergabeparameter

$type The type of join. Typically one one of INNER, LEFT OUTER, and RIGHT OUTER.

$table The table against which to join. May be a string or another SelectQuery object. If a query object is passed, it will be used as a subselect.

$alias The alias for the table. In most cases this should be the first letter of the table, or the first letter of each "word" in the table. If omitted, one will be dynamically generated.

$condition The condition on which to join this table. If the join requires values, this clause should use a named placeholder and the value or values to insert should be passed in the 4th parameter. For the first table joined on a query, this value is ignored as the first table is taken as the base table.

$arguments An array of arguments to replace into the $condition of this join.

Rückgabewert

The unique alias that was assigned for this table.

Verwandte Themen

Database abstraction layer

Allow the use of different database servers using the same code base.

Code

includes/database/select.inc, line 310

<?php
public function addJoin($type, $table, $alias = NULL, $condition = NULL, $arguments = array());
?>