Drop the primary key.
$table: The table to be altered.
TRUE if the primary key was successfully dropped, FALSE if there was no primary key on this table to begin with.
Overrides DatabaseSchema::dropPrimaryKey
public function dropPrimaryKey($table) {
$old_schema = $this
->introspectSchema($table);
$new_schema = $old_schema;
if (empty($new_schema['primary key'])) {
return FALSE;
}
unset($new_schema['primary key']);
$this
->alterTable($table, $old_schema, $new_schema);
return TRUE;
}