On Mon, 27 Aug 2007 13:34:09 -0400
Joel Richard <postgres@joelrichard.com> wrote:
> That's what I thought at first, but this is not the case. She's
> looking for the first two dates in -each- city in the table. I
> initially thought that this could be accomplished with GROUP BY and
> LIMIT, but GROUP BY can only give you the first date for each city,
> not the first two dates for each city.
Yes, you are correct. My mistake.
> So far, I haven't come up with any clever ideas. I'm not sure this
> can be done in SQL.
Well, I can think of an SQL only method involving a temporary table but
it would not be a single query:
- Select into temp table where date is max.- Select from temp table union with main table where date is max and
is not in temp table.
--
D'Arcy J.M. Cain <darcy@druid.net> | Democracy is three wolves
http://www.druid.net/darcy/ | and a sheep voting on
+1 416 425 1212 (DoD#0082) (eNTP) | what's for dinner.
