Get the key of data acquisition
| mixed getFetchKey ( void ) |
To get the key will override the primary key data at the time of acquisition. The case of a composite key, to build more than one column name in the form of an array. Functions that effects Cascade_DB_SQL_Session::get(), Cascade_DB_SQL_Session::getEx(), Cascade_DB_SQL_Session::mget(), Cascade_DB_SQL_Session::mgetEx()