Hannu Krosing <[EMAIL PROTECTED]> writes:
> Ok, this is a new version of the vacuum patch with the following changes
> following some suggestions in this thread.
The more I look at this, the uglier it looks ... and I still haven't
seen any convincing demonstration that it *works*, ie doesn't have
bad side-effects on the transaction-is-in-progress logic. I'm
particularly concerned about what happens to the RecentXmin horizon
for pg_subtrans and pg_multixact operations.
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
