abstract public function DatabaseSchema::addUniqueKey

1.20.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.

1 method overrides DatabaseSchema::addUniqueKey()

DatabaseSchema_mysql::addUniqueKey in drivers/database_mysql/schema.inc: Add a unique key.

File

includes/database/schema.inc, line 598: Generic Database schema code.

Class

DatabaseSchema: Base class for database schema definitions.

Code

abstract public function addUniqueKey($table, $name, $fields);