Etsuro Fujita <fujita.ets...@lab.ntt.co.jp> writes:
> * Modified rewrite_targetlist(), which is a new function added to
> preptlist.c, so that we do const-simplification to junk TLEs that
> AddForeignUpdateTargets() added, as that API allows the FDW to add junk
> TLEs containing non-Var expressions to the query's targetlist.
This does not seem like a good idea to me. eval_const_expressions is not
a cheap thing, and for most use-cases those cycles will be wasted, and it
has never been the responsibility of preprocess_targetlist to do this sort
of thing.
Please put the responsibility of doing const-expression simplification
in these cases somewhere closer to where the problem is being created.
regards, tom lane
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
