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(parent: 9a54b76) | patch

Remove completed items, and the last is unwanted:

Remove completed items, and the last is unwanted:

< o Fix memory leak from exceptions
<
< http://archives.postgresql.org/pgsql-performance/2006-06/msg00305.php
<
< * Allow constraint_exclusion to work for UNIONs like it does for
< inheritance, allow it to work for UPDATE and DELETE statements, and allow
< it to be used for all statements with little performance impact
<
< * Add estimated_count(*) to return an estimate of COUNT(*)
<
< This would use the planner ANALYZE statistics to return an estimated
< count.
< http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php

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