Re: Index on timestamp to date field
| От | Jeff |
|---|---|
| Тема | Re: Index on timestamp to date field |
| Дата | |
| Msg-id | Pine.BSF.4.44.0310140851410.1994-100000@torgo.978.org обсуждение исходный текст |
| Ответ на | Index on timestamp to date field ("Patrick Hatcher" <PHatcher@macys.com>) |
| Список | pgsql-general |
On Mon, 13 Oct 2003, Patrick Hatcher wrote: > I have a timestamp field where I find I'm doing a lot of searching by date > (YYYY-MM-DD) or using this field as a match to another table that has a > date format. I wanted to create an index on the timestamp field using a > date format. Is this possible? I tried: > CREATE INDEX test_2 ON table1 USING btree to_char(field2, 'MM-DD-YYYY'); > but I get an error message error at or new to_char > > TIA > So you don't want a oh. lets call it a "real index" on the timestamp field? create index ts_index on mytable(mytimestamp); Or can you not change the way the dates are input? Or is the "mytimestamp" field a varchar containing a date string? -- Jeff Trout <jeff@jefftrout.com> http://www.jefftrout.com/ http://www.stuarthamm.net/
В списке pgsql-general по дате отправления: