Re: foreign key constraint, planner ignore index.
От | Andrew Nesheret |
---|---|
Тема | Re: foreign key constraint, planner ignore index. |
Дата | |
Msg-id | 476A093C.5010805@infinet.ru обсуждение исходный текст |
Ответ на | Re: foreign key constraint, planner ignore index. (Richard Huxton <dev@archonet.com>) |
Ответы |
Re: foreign key constraint, planner ignore index.
Re: foreign key constraint, planner ignore index. |
Список | pgsql-general |
Richard Huxton wrote: > Andrew Nesheret wrote: >> Richard Huxton wrote: >>> If you PREPARE .... then EXECUTE the same query, does it still use >>> the index? Tested, comments? --- code ----- --- result --- Result for node #2007 Index Scan using fki_nodes on sf_ipv4traffic x (cost=0.00..9.65 rows=1 width=6) (actual time=0.060..0.060 rows=0 loops=1) Index Cond: ($1 = node) Total runtime: 0.131 ms Result for node #156 Seq Scan on sf_ipv4traffic x (cost=0.00..360281.29 rows=15795383 width=6) (actual time=0.048..108939.142 rows=15795376 loops=1) Filter: ($1 = node) Total runtime: 365989.953 ms ---- UP(subject), we are go away from my problem, in case of integrity check with foreign key. -- __________________________________ WBR, Andrew Nesheret ICQ:10518066
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