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Re: BUG #4748: hash join and sort-merge join make different results - Mailing list pgsql-bugs

From Roman Kononov
Subject Re: BUG #4748: hash join and sort-merge join make different results
Date
Msg-id 49D6D994.3030502@ftml.net
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In response to Re: BUG #4748: hash join and sort-merge join make different results  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: BUG #4748: hash join and sort-merge join make different results
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On 2009-04-03 14:57 Tom Lane said the following:
> I think we could fix this by having interval_hash() duplicate the
> total-span calculation done by interval_cmp_internal, and then return
> the hash of the resulting TimeOffset.  This is going to break existing
> hash indexes on intervals, but there seems little choice...

Consider hashing the result of justify_interval().

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