public function getTablePrimaryKey($name, $refresh = false)
    {
        return $this->getTableMetadata($name, SchemaInterface::META_PK, $refresh);
    }
public function getTablePrimaryKey($name, $refresh = false)
    {
        return $this->getTableMetadata($name, SchemaInterface::META_PK, $refresh);
    }
public function getTablePrimaryKey ( $ name , $ refresh = false ) { return $ this -> getTableMetadata ( $ name , SchemaInterface :: META_PK , $ refresh ) ; }
Obtains the primary key for the named table.
@param string $name table name. The table name may contain schema name if any. Do not quote the table name.
@param bool $refresh whether to reload the information even if it is found in the cache.
@return Constraint|null table primary key, `null` if the table has no primary key.
Obtains the primary key for the named table .