Re: Create index on the year of a date column
| От | Ron Johnson |
|---|---|
| Тема | Re: Create index on the year of a date column |
| Дата | |
| Msg-id | 1054895641.18124.46.camel@haggis обсуждение исходный текст |
| Ответ на | Create index on the year of a date column ("Nick Barr" <nick.barr@webbased.co.uk>) |
| Список | pgsql-general |
On Thu, 2003-06-05 at 11:38, Nick Barr wrote: > Hi, > > I am trying to create an index on the year of a date field, to speed up > some queries. Table structure is as follows If, for example, you want all records where item_created_start_date in calendar year 2001, why not create the index on i_c_s_d and say WHERE item_created_start_date between '2001-01-01' and '2001-12-31' -- +-----------------------------------------------------------+ | Ron Johnson, Jr. Home: ron.l.johnson@cox.net | | Jefferson, LA USA http://members.cox.net/ron.l.johnson | | | | Regarding war zones: "There's nothing sacrosanct about a | | hotel with a bunch of journalists in it." | | Marine Lt. Gen. Bernard E. Trainor (Retired) | +-----------------------------------------------------------+
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