Обсуждение: select max from subquery
Dear All i gave this kind of query select max(foo) from (select some statement) as foo but it gave me this error ERROR: function max(record) does not exist any help how i can select max value from suqbuery in main query thanks -- View this message in context: http://www.nabble.com/select-max-from-subquery-tp22011562p22011562.html Sent from the PostgreSQL - general mailing list archive at Nabble.com.
On 14/02/2009 11:05, searchelite wrote: > select max(foo) from (select some statement) as foo Can you post the full query? It's very hard to tell from this. Also, I think you may need to give the subquery an alias, thus: select max(foo) from ( .... ) s as foo Ray. ------------------------------------------------------------------ Raymond O'Donnell, Director of Music, Galway Cathedral, Ireland rod@iol.ie Galway Cathedral Recitals: http://www.galwaycathedral.org/recitals ------------------------------------------------------------------
select max(foo.record) from ... ?
yOn Sat, 14 Feb 2009, searchelite wrote:
>
> Dear All
>
> i gave this kind of query
>
> select max(foo) from (select some statement) as foo
>
> but it gave me this error
> ERROR: function max(record) does not exist
>
>
> any help how i can select max value from suqbuery in main query
>
like this:
select max(foo.qq) from (select 1 as qq) as foo;
^^ ^^
> thanks
>
Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83
Oleg Bartunov wrote: > > yOn Sat, 14 Feb 2009, searchelite wrote: > >> >> Dear All >> >> i gave this kind of query >> >> select max(foo) from (select some statement) as foo >> >> but it gave me this error >> ERROR: function max(record) does not exist >> >> >> any help how i can select max value from suqbuery in main query >> > > like this: > > select max(foo.qq) from (select 1 as qq) as foo; > ^^ ^^ > >> thanks >> > > Regards, > Oleg > _____________________________________________________________ > Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru), > Sternberg Astronomical Institute, Moscow University, Russia > Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/ > phone: +007(495)939-16-83, +007(495)939-23-83 > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general > > thanks oleg for your reply..that's what i need ;) -- View this message in context: http://www.nabble.com/select-max-from-subquery-tp22011562p22021619.html Sent from the PostgreSQL - general mailing list archive at Nabble.com.