Josh Berkus wrote:
Sebastian,
I'm having another problem with a query that takes to long, because
the appropriate index is not used.
PostgreSQL is not currently able to push down join criteria into UNIONed
subselects. It's a TODO.
And the appends in a "SELECT * from parent" are UNIONs, aren't they?
Also, if you're using inherited tables, it's unnecessary to use UNION; just
select from the parent.
Yes, but then no index is used...
Sebastian
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
