function Schema::addUniqueKey

Same name in this branch
  1. 11.1.x core/modules/pgsql/src/Driver/Database/pgsql/Schema.php \Drupal\pgsql\Driver\Database\pgsql\Schema::addUniqueKey()
  2. 11.1.x core/modules/sqlite/src/Driver/Database/sqlite/Schema.php \Drupal\sqlite\Driver\Database\sqlite\Schema::addUniqueKey()
  3. 11.1.x core/modules/mysql/src/Driver/Database/mysql/Schema.php \Drupal\mysql\Driver\Database\mysql\Schema::addUniqueKey()

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.

3 methods override Schema::addUniqueKey()
Schema::addUniqueKey in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php
Add a unique key.
Schema::addUniqueKey in core/modules/sqlite/src/Driver/Database/sqlite/Schema.php
Add a unique key.
Schema::addUniqueKey in core/modules/mysql/src/Driver/Database/mysql/Schema.php
Add a unique key.

File

core/lib/Drupal/Core/Database/Schema.php, line 418

Class

Schema
Provides a base implementation for Database Schema.

Namespace

Drupal\Core\Database

Code

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