Re: [GENERAL] select max from subquery
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: o...@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. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
[GENERAL] 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. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] auto insert data every one minute
Tino Wildenhain wrote: > > > I wonder what is you complete problem? It seems all the advices given > so far are shots-in-the-dark. Could you perhaps expand a bit? > > Also for sophisticated solution, if you stick to windows you might > want to consider something different then just pure CMD, say some > scripting language to support. > > Tino > > I have pre-recorded gps data in .sql insert format..for simulate real-time tracking, i want to insert the data in let say every one minute -- View this message in context: http://www.nabble.com/auto-insert-data-every-one-minute-tp20027811p21524797.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] auto insert data every one minute
Daniel Verite wrote: > > searchelite wrote: > > > How about using pg_sleep ? > > INSERT ; > COMMIT; > SELECT pg_sleep(60); > > INSERT...; > COMMIT; > SELECT pg_sleep(60); > > > > i can use pg_sleep..but i have thousands of data to be inserted..is there any better way using pg_sleep? -- View this message in context: http://www.nabble.com/auto-insert-data-every-one-minute-tp20027811p21263763.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
[GENERAL] auto insert data every one minute
Hi all.. I have an sql script consists of insert statement data. I want to insert every row of data every one minute. How can i do that using batch file in windows Thank you -- View this message in context: http://www.nabble.com/auto-insert-data-every-one-minute-tp20027811p20027811.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
[GENERAL] Federated Server
Hi all.. Is there any capability of PostgreSQL to become a federated server? Thanks -- View this message in context: http://www.nabble.com/Federated-Server-tp19850547p19850547.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] mirroring table
Craig Ringer wrote: > > It sounds like what you want is to have a table that contains a full > history of records, plus another table that contains only the records > from the first table that were inserted/updated today. > > If that is what you mean, there are several ways to do it, with > different advantages and disadvantages. > > You can treat your smaller table as a materialized view, where you use > triggers to update it and run a batch job (with cron or similar) every > night to clear it. > > Another way is to make it a normal view, possibly with rules in place to > make it updatable. You could use a partial index on the primary key > that's restricted to tuples inserted/updated more recently than a given > date to improve performance of the view. > > For that matter, you could even use table partitioning to do it, though > this would involve a bit of manual (or scripted) maintenance. > > Anyway, this is all speculation if I've missed the point of your > question. If I'm mistaken about what you meant, perhaps you could > explain in a little more detail? > > -- > Craig Ringer > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general > > Thanks for the reply Craig..this is answered my question... thanks again -- View this message in context: http://www.nabble.com/mirroring-table-tp18961792p19119465.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
[GENERAL] mirroring table
Hi all..how can i mirroring table in postgresql? Let say i have a transaction table updated everyday, i want to mirror that table so that the other table only store the latest updated day records.. I hope you can understand my question.. Thanks in advance -- View this message in context: http://www.nabble.com/mirroring-table-tp18961792p18961792.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
