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)).
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