Hi Mark, and thanks for getting back to me.
Le mercredi, mai 5, 2021 5:35 PM, Mark Rotteveel <m...@lawinegevaar.nl> a écrit : > > Maybe if the DBA/dev could put the KEYWORD [BEFORE | ON | AFTER] for > > SQL in CHECK constraints which contain SQL? > > If this is the wrong place to suggest this, please let me know where I > > should post this. > For this purpose, create an AFTER INSERT OR UPDATE trigger. If I can't even do intra-table (as opposed to inter-table) SQL in the CHECK constraint, what's the point in allowing SQL in the constraint at all? I mean, what does SQL "bring to the party" in this case if I can't use it in this way? When I first found out that SQL was allowed in Firebird DDL, I was quite excited - I've always believed that DDL should be much more flexible and powerful - indeed, AFAIK, the SQL standard from 1992 allows for database assertions or database level constraints - it's just that nobody's implemented them - much to my puzzlement and annoyance. Anyway, thanks again for your input. Rgs, Pól... > Mark Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
