| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Ryan Hansen" <ryan(dot)hansen(at)brightbuilders(dot)com> |
| Cc: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: Date Index |
| Date: | 2008-11-03 23:59:17 |
| Message-ID: | 4050.1225756757@sss.pgh.pa.us |
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| Lists: | pgsql-sql |
"Ryan Hansen" <ryan(dot)hansen(at)brightbuilders(dot)com> writes:
> Incidentally, extract(date from ts) doesn't work on my install of 8.3
The field names recognized by extract() are quite well documented
http://www.postgresql.org/docs/8.3/static/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT
and "date" isn't one of them.
What you probably want is just to cast the timestamp to date:
cast(ts as date) -- SQL standard syntax
ts::date -- traditional Postgres abbreviation
regards, tom lane
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