function Schema::findPrimaryKeyColumns

Same name in this branch

11.1.x core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::findPrimaryKeyColumns()
11.1.x core/modules/pgsql/src/Driver/Database/pgsql/Schema.php \Drupal\pgsql\Driver\Database\pgsql\Schema::findPrimaryKeyColumns()
11.1.x core/modules/sqlite/src/Driver/Database/sqlite/Schema.php \Drupal\sqlite\Driver\Database\sqlite\Schema::findPrimaryKeyColumns()

Overrides Schema::findPrimaryKeyColumns

2 calls to Schema::findPrimaryKeyColumns()

Schema::addField in core/modules/mysql/src/Driver/Database/mysql/Schema.php: Add a new field to a table.
Schema::dropField in core/modules/mysql/src/Driver/Database/mysql/Schema.php: Drop a field.

File

core/modules/mysql/src/Driver/Database/mysql/Schema.php, line 534

Class

Schema: MySQL implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\mysql\Driver\Database\mysql

Code

protected function findPrimaryKeyColumns($table) {
    if (!$this->tableExists($table)) {
        return FALSE;
    }
    $result = $this->connection
        ->query("SHOW KEYS FROM {" . $table . "} WHERE Key_name = 'PRIMARY'")
        ->fetchAllAssoc('Column_name');
    return array_keys($result);
}