On 24-10-2011 11:14, michael.vancann...@wisa.be wrote: > On Mon, 24 Oct 2011, Reinier Olislagers wrote: >> Also, using INSERT...RETURNING it's very well possible to get the >> sequence value directly when inserting the data. > > Yes, but not all DBs support this. We use Firebird a lot, and it didn't > support that construct until version 2.1 or so. Yep, it's one of many really nice cross-db incompatibilities. Long live SQL ;) > > In each case: it's hard to abstract correctly, but nevertheless we'll try > and make managing this easier. Martin's ideas for this are useful. Yes, he's got experience with it already - more than you can say of some armchair theorists like me ;) > > What's funny is that I never understood how the MySQL/SQL-Server way could > correctly work. For example I have 2 tables, both with an auto-incremental > field. Table 1 has an after insert trigger that does an extra insert in > table 2. When I do an insert in table 1 , what does 'last_insert_id' > return ? The value for table 2 or table 1 ? The last inserted id for > your connection is the one for table 2, but you need/expect the last id > for table 1 :-)
True. Fortunately, I've never needed to do that ;) Regards, Reinier _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
