| From: | Thomas Lockhart <lockhart(at)fourpalms(dot)org> |
|---|---|
| To: | Ben-Nes Michael <miki(at)canaan(dot)co(dot)il> |
| Cc: | Frank Bax <fbax(at)sympatico(dot)ca>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: caculating while select - maybe sum ? |
| Date: | 2002-02-05 17:26:04 |
| Message-ID: | 3C6015AC.6A692566@fourpalms.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
... and if you want to ditch the function call, you can try something
like this:
lockhart=# select *, (select sum(e-b) from t1 where b <= x.b) from t1 x;
i | b | e | ?column?
---+------------------------+------------------------+----------
1 | 2002-02-05 17:14:37+00 | 2002-02-05 17:14:38+00 | 00:00:01
1 | 2002-02-05 17:14:40+00 | 2002-02-05 17:14:41+00 | 00:00:02
1 | 2002-02-05 17:14:41+00 | 2002-02-05 17:14:42+00 | 00:00:03
1 | 2002-02-05 17:14:42+00 | 2002-02-05 17:14:43+00 | 00:00:04
(4 rows)
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