Originally posted by Mnemonical

What is it now? And, my you explain me please why when I put '', '' it works and when I put 'null, null', it doesn't?
Probably this is internal Developer problem with datatype convertions.
when u typed '', '' - u say oracle - datatype is string, it's my mind.


.....it worked, compiled sucessfully, but when I run
and click on it, I get the error: FRM-440010: cannot read from employee
[/QUOTE]

About this error i can't say norhing. need little bit more information.