Query with no result

[Miflon]

Hi every one.
W10 win64; Lazarus 2.2.2; fpc 3.2.2; postgresql
What is the postgresql error code when a query returns no result?
Thanks for your replies.

[Чебурашка]

There is no error as it is normal that certain queries have 0 records of result. Simply you have to check query.EOF before accessing the fields of the result.

[TRon]

As stated by Чебурашка, there is no error code returned because a query returning zero results is perfectly valid so use the suggested method or alternatively you could use IsEmpty

[Miflon]

Thanks to you both. I think I'l do a try to IsEmpty.