"Sergey Moroz" <[EMAIL PROTECTED]> writes: > So I wonder why doesn't postgres store hashes for all queries and > misses parsing step if not needed like Oracle does?
Because we think it's a waste of cycles, not to mention storage.
regards, tom lane
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
