15.03.2022 19:41, Dmitry Yemanov wrote:
Anyway, IMO "declared" LTTs are much more useful than "created" LTTs, so the latter ones may be deferred. Or we may live without them at all ;-)
CREATE'd LTT's could be very useful to store\materialize intermediate results of complex evaluations. Think about it as of temp variables used in complex expressions. Obviously, GTT's are much less useful in such scenarios. *Relational* DBMS should be able to operate with *relation*-based expressions, including intermediate steps\results, isn't is ? ;) Yes, we have CTE's which allows to reduce complexity of many queries, but it is not an universal solution. And our optimizer is not smart enough, unfortunately to make CTE's more powerful. Regards, Vlad Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
