public function DatabaseSchemaInterface::addUniqueKey in Schema 8

Add a unique key.

Parameters

$table: The table to be altered.

$name: The name of the key.

$fields: An array of field names.

Throws

\Drupal\Core\Database\SchemaObjectDoesNotExistException If the specified table doesn't exist.

\Drupal\Core\Database\SchemaObjectExistsException If the specified table already has a key by that name.

File

src/DatabaseSchemaInterface.php, line 214

Contains Drupal\schema\DatabaseSchemaInterface.

Class

DatabaseSchemaInterface

This interface describes public methods of \Drupal\Core\Database\Schema.

Namespace

Drupal\schema

Code

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