performance - self-joins vs. subqueries
От
K. Ari Krupnikov
Тема
performance - self-joins vs. subqueries
Дата
Msg-id
3A880244.4F0C5F5F@iln.net
Список
Дерево обсуждения
Re: performance - self-joins vs. subqueries "K. Ari Krupnikov" <ari@iln.net>
Re: performance - self-joins vs. subqueries Tom Lane <tgl@sss.pgh.pa.us>
Many queries can be formulated as either a self-join or a subquery on the same table. Is there any difference in performance, or does the analyzer treat them the same? -- K. Ari Krupnikov DBDOM - bridging XML and relational databases http://www.iter.co.il
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