> The database grows very slowly. The main load comes from SELECT's and
> not from INSERT's or UPDATE's, but the performance gets slower day by day...
>
> I have no idea where to search for the speed break!
Lets start with an example. Please send us an EXPLAIN ANALYZE of a
couple of the poorly performing queries.
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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
