>>>>> "scott" == scott marlowe <scott.marlowe@ihs.com> writes:
[...]
scott> Note here:
scott> Merge Join (cost=1788.68..4735.71 rows=1 width=85) (actual
scott> time=597.540..1340.526 rows=20153 loops=1) Merge Cond:
scott> ("outer".id = "inner".id)
scott> This estimate is WAY off. Are both of those fields indexed
scott> and analyzed? Have you tried upping the statistics target on
scott> those two fields? I assume they are compatible types.
Should I understand that a join on incompatible types (such as integer
and varchar) may lead to bad performances ?
--
Laurent Martelli
laurent@aopsys.com Java Aspect Components
http://www.aopsys.com/http://jac.aopsys.com