8 Aug
2013
8 Aug
'13
2:36 a.m.
08.08.2013 09:11, Roberto Spadim пишет:
ops... i forgot one more question that i don't know how today it is executed... the "explain extended" create the "normalized query" after parse/optimize but don't execute the query, i'm thinking right or i miss something?
Yes it could execute only constant expression if they are relatively cheap. But again there is no a lot of cases which makes the schema "profitable" (actually I hardly believe that there is at least one real world installation which require it (if you get optimization involved especially)).