function DatabaseSchema_mysql::addPrimaryKey

Overrides DatabaseSchema::addPrimaryKey

File

includes/database/mysql/schema.inc, line 405

Class

DatabaseSchema_mysql

Code

public function addPrimaryKey($table, $fields) {
    if (!$this->tableExists($table)) {
        throw new DatabaseSchemaObjectDoesNotExistException(t("Cannot add primary key to table @table: table doesn't exist.", array(
            '@table' => $table,
        )));
    }
    if ($this->indexExists($table, 'PRIMARY')) {
        throw new DatabaseSchemaObjectExistsException(t("Cannot add primary key to table @table: primary key already exists.", array(
            '@table' => $table,
        )));
    }
    $this->connection
        ->query('ALTER TABLE {' . $table . '} ADD PRIMARY KEY (' . $this->createKeySql($fields) . ')');
}