function Schema::createPrimaryKeySql

Create the SQL expression for primary and unique keys.

Postgresql does not support key length. It does support fillfactor, but that requires a separate database lookup for each column in the key. The key length defined in the schema is ignored.

3 calls to Schema::createPrimaryKeySql()

Schema::addPrimaryKey in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php: Add a primary key.
Schema::addUniqueKey in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php: Add a unique key.
Schema::createTableSql in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php: Generate SQL to create a new table from a Drupal schema definition.

File

core/modules/pgsql/src/Driver/Database/pgsql/Schema.php, line 494

Class

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

Namespace

Drupal\pgsql\Driver\Database\pgsql

Code

protected function createPrimaryKeySql($fields) {
    $return = [];
    foreach ($fields as $field) {
        if (is_array($field)) {
            $return[] = '"' . $field[0] . '"';
        }
        else {
            $return[] = '"' . $field . '"';
        }
    }
    return implode(', ', $return);
}