Fetches the next record from the current selection
The id of the cursor
Normally NULL fields are retrieved as empty strings and one cannot distinguish between empty cells and NULL cells. If undefNULL is true, NULL field are retrieved as undefined elements of the array.
If true, the locators are fetched for CLOB/BLOB fields instead of the data. They can then be used with methods LobRead and LobWrite of class db. As of today only the oracle extension takes into account the value of this parameter.
An associative array containing cells of retrieved records. Element's index names of the array are equal to field title as referenced in the sql statements.
To set and get the position of the cursor use: method.db.Seek and method.db.Tell methods
Can return erros related to the DBMS. In that case the native error(or status, as in ODBC) can be found in err.SubErr