abstract public function DatabaseSchema::addUniqueKey
| 7.x schema.inc | abstract public DatabaseSchema::addUniqueKey($table, $name, $fields) |
Add a unique key.
Parameters
$table: The table to be altered.
$name: The name of the key.
$fields: An array of field names.
Throws
DatabaseSchemaObjectDoesNotExistException If the specified table doesn't exist.
DatabaseSchemaObjectExistsException If the specified table already has a key by that name.
3 methods override DatabaseSchema::addUniqueKey()
- DatabaseSchema_mysql::addUniqueKey in drupal-7.x/
includes/ database/ mysql/ schema.inc - Add a unique key.
- DatabaseSchema_pgsql::addUniqueKey in drupal-7.x/
includes/ database/ pgsql/ schema.inc - Add a unique key.
- DatabaseSchema_sqlite::addUniqueKey in drupal-7.x/
includes/ database/ sqlite/ schema.inc - Add a unique key.
File
- drupal-7.x/
includes/ database/ schema.inc, line 530 - Generic Database schema code.
Class
Code
abstract public function addUniqueKey($table, $name, $fields);