Hi

>Depends on what you store. If you don't pass a value, for example, SQL servers set the field to NULL. Therefore in most case, it would be FIELD IS NULL or FIELD IS NOT NULL. For strings you could check the length. However, be aware that empty strings are not supported on all SQL servers like Oracle.

This was for a filled in column, so LEN() was okay, plus currently Oracle is not used so no problem there.

Thanks.