Subject Re: [ib-support] ISC Error codes (REPOST)
Author Ivan Prenosil
> From: Helen Borrie
> Hint: if you are referring to the gds codes in an ON EXCEPTION GDSCODE...
> structure in PSQL, you need to omit the "isc_" prefix from the constant
> name. This isn't documented anywhere except in the Using Firebird manual
> and it is there thanks to Ivan Prenosil's "inside knowledge".

The credit should go to Rey Rex, who discovered and published
this trick in IB list five years ago.