Re: iceberg queries
| От | Wei Weng |
|---|---|
| Тема | Re: iceberg queries |
| Дата | |
| Msg-id | 002101c2cc56$f5112330$2f437242@PASCAL обсуждение исходный текст |
| Ответ на | Re: iceberg queries (Christoph Haller <ch@rodos.fzk.de>) |
| Ответы |
Re: iceberg queries
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| Список | pgsql-sql |
It is a query that looks like SELECT target1, target2... targetn, SUN(t.qty) FROM Table t GROUP BY target1 HAVING SUM(t.qty)>=10 You can replace SUM(t.qty)>=10 with other aggregate constraints. ----- Original Message ----- From: Christoph Haller To: pgsql-sql@postgresql.org Cc: wweng@kencast.com Sent: Tuesday, February 04, 2003 3:39 AM Subject: Re: [SQL] iceberg queries > > Does PostgreSQL optimizer handle iceberg queries well? > What do you mean by "iceberg query" ? I've never heard this term. Regards, Christoph
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