Thread: function to determine size of a table (or even row)
hi all! is there an intrinsic function in postgresql to determine the size of a table (or a row)? or has anyone created such who would like to share it with me? thanks, mel
> is there an intrinsic function in postgresql to determine the size of a > table (or a row)? Refer contrib/dbsize to get database size and table size details. regards, bhuvaneswaran
I am looking at date formats. There seem to be a very limited set: 'ISO,' 'SQL', 'Postgres' and 'German' with sub-format of: 'European' and 'NonEuropean'. Has any member developed any way of having a more elaborate formats. Like, idealy, an Agregate function which sets the date to any desired format? Thanks in advance for any help, Ben
Am Die, 2003-04-08 um 11.59 schrieb Ben Clewett: > Has any member developed any way of having a more elaborate formats. > Like, idealy, an Agregate function which sets the date to any desired > format? AFAIR an aggregate is something that summarizes many rows to 1 row like: avg(), sum() etc. (in grouped queries) cu -- e-Trolley Sayegh & John, Nabil Sayegh Tel.: 0700 etrolley /// 0700 38765539 Fax.: +49 69 8299381-8 PGP : www.e-trolley.de
Yes, sorry, I mean a Function... Ben Nabil Sayegh wrote: > Am Die, 2003-04-08 um 11.59 schrieb Ben Clewett: > > >>Has any member developed any way of having a more elaborate formats. >>Like, idealy, an Agregate function which sets the date to any desired >>format? > > > AFAIR an aggregate is something that summarizes many rows to 1 row like: > avg(), sum() etc. (in grouped queries) > > cu
Dear Novice, I want to have a go at some Triggers. To update summary records of accounting data. I see in the reference manual http://www.de.postgresql.org/users-lounge/docs/7.2/postgres/sql-createconstraint.html it makes the comment: "It is not intended for general use." Does this mean that there is a problem with triggers I should be aware of? Thanks, Ben
Ben Clewett <B.Clewett@roadrunner.uk.com> writes:
> Has any member developed any way of having a more elaborate formats.
There's always to_char() ... it's pretty ugly but can format a date
practically any way you want.
regards, tom lane
I see... Found the reference: http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=functions-formatting.html to_char(my_timestamp, 'DD/MM/YY') This looks really exactly what I want, thanks! Ben Tom Lane wrote: > Ben Clewett <B.Clewett@roadrunner.uk.com> writes: > >>Has any member developed any way of having a more elaborate formats. > > > There's always to_char() ... it's pretty ugly but can format a date > practically any way you want. > > regards, tom lane >
> I want to have a go at some Triggers. To update summary records of > accounting data. > > I see in the reference manual > http://www.de.postgresql.org/users-lounge/docs/7.2/postgres/sql-createconstraint.html > it makes the comment: > > "It is not intended for general use." postgres uses CREATE CONSTRAINT TRIGGER to create FK references during pg_dump process. CREATE TRIGGER is what you are looking for. regards, bhuvaneswaran
the dbsize contrib module will do database and table size. Robert Treat On Tue, 2003-04-08 at 04:26, Mel Jamero wrote: > hi all! > > is there an intrinsic function in postgresql to determine the size of a > table (or a row)? > > or has anyone created such who would like to share it with me? > > thanks, > > mel
Ben, > I want to have a go at some Triggers. To update summary records of > accounting data. > > I see in the reference manual > http://www.de.postgresql.org/users-lounge/docs/7.2/postgres/sql-createconstraint.html > it makes the comment: > > "It is not intended for general use." > > Does this mean that there is a problem with triggers I should be aware of? No, it means that you're in the wrong part of the documentation. You want "CREATE TRIGGER" not "CREATE CONSTRAINT TRIGGER". -- -Josh Berkus Aglio Database Solutions San Francisco