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   1. drupal7

Add a primary key.

This implementation can't use ALTER TABLE directly, because SQLite only supports a limited subset of that command.

Übergabeparameter

$ret Array to which query results will be added.

$table The table to be altered.

$fields Fields for the primary key.

Verwandte Themen

Schema API

A Drupal schema definition is an array structure representing one or more tables and their related keys and indexes. A schema is defined by hook_schema(), which usually lives in a modulename.install file.

Code

includes/database/sqlite/schema.inc, line 495

<?php
public function addPrimaryKey(&$ret, $table, $fields) {
  $new_schema = $this->introspectSchema($table);
  $new_schema['primary key'] = $fields;
  $this->alterTable($ret, $table, $new_schema);
}
?>