Обсуждение: Change date format through an environmental variable?
I want to get Pg (v7.4.7) to output a date field in a different format than yyyy-mm-dd through the use of an environmental variable (because I have no access the SQL). Is this possible? I know about the DATESTYLE variable, but that seems to work only within a query transaction, and has no effect if trying to set it as an envvar. Mark
On Wed, Mar 01, 2006 at 12:32:26PM -0500, Mark Fenbers wrote: > have no access the SQL). Is this possible? I know about the DATESTYLE > variable, but that seems to work only within a query transaction, and > has no effect if trying to set it as an envvar. No, it won't work as an environment variable. You can alter the postgresql.conf file, though. A -- Andrew Sullivan | ajs@crankycanuck.ca When my information changes, I alter my conclusions. What do you do sir? --attr. John Maynard Keynes
I found PGDATESTYLE that solves my problem, but ever since, I've been looking for a comprehensive list of environmental variables that Pg recognizes, but haven't been able to find such a list in any of the books I looked in or the man pages. Anyone know where I can find such a list? Mark Mark Fenbers wrote: > I want to get Pg (v7.4.7) to output a date field in a different format > than yyyy-mm-dd through the use of an environmental variable (because > I have no access the SQL). Is this possible? I know about the > DATESTYLE variable, but that seems to work only within a query > transaction, and has no effect if trying to set it as an envvar. > > Mark > > ---------------------------(end of broadcast)--------------------------- > TIP 5: don't forget to increase your free space map settings >
On Wed, Mar 01, 2006 at 02:20:57PM -0500, Mark Fenbers wrote: > I found PGDATESTYLE that solves my problem, but ever since, I've been > looking for a comprehensive list of environmental variables that Pg > recognizes, but haven't been able to find such a list in any of the > books I looked in or the man pages. Anyone know where I can find such a > list? That's a client variable, and it works for libpq-based clients that don't do something funny with them (none of them ought to, but one can't guarantee others' programs). So you're not modifying for other clients, AFAIK, just for you. (If that's what you want, well, good, but it's important to know what it does.) The list for 8.1 is in the docs: http://www.postgresql.org/docs/8.1/interactive/libpq-envars.html A -- Andrew Sullivan | ajs@crankycanuck.ca A certain description of men are for getting out of debt, yet are against all taxes for raising money to pay it off. --Alexander Hamilton
On Wed, Mar 01, 2006 at 02:20:57PM -0500, Mark Fenbers wrote: > I found PGDATESTYLE that solves my problem, but ever since, I've been > looking for a comprehensive list of environmental variables that Pg > recognizes, but haven't been able to find such a list in any of the > books I looked in or the man pages. Anyone know where I can find such a > list? The libpq documentation has a list of environment variables, although it's not complete: http://www.postgresql.org/docs/8.1/interactive/libpq-envars.html -- Michael Fuhr
Michael Fuhr <mike@fuhr.org> writes: > The libpq documentation has a list of environment variables, although > it's not complete: > http://www.postgresql.org/docs/8.1/interactive/libpq-envars.html Er, what's not complete about it? Feel free to send a doc patch ... regards, tom lane
On Thu, Mar 02, 2006 at 01:16:47AM -0500, Tom Lane wrote: > Michael Fuhr <mike@fuhr.org> writes: > > The libpq documentation has a list of environment variables, although > > it's not complete: > > http://www.postgresql.org/docs/8.1/interactive/libpq-envars.html > > Er, what's not complete about it? Feel free to send a doc patch ... Missing from that page are mostly standard variables that aren't specific to PostgreSQL but that applications like psql might use. Documented elsewhere are: EDITOR (psql) PAGER (psql) PGDATA (various) PSQL_EDITOR (psql) SHELL (psql) TMPDIR (psql) TZ (postmaster) VISUAL (psql) I see LC_COLLATE and LC_CTYPE in a few places but not in the documentation for postgres/postmaster, which is where they appear to be used (backend/main/main.c). Should those pages mention them? A couple of variables are used in the code but aren't mentioned in the documentation. Are they worth documenting? COMSPEC (psql, Win32 only) PG_DBPATH (ecpg, Informix mode) -- Michael Fuhr
On Thu, Mar 02, 2006 at 12:33:31AM -0700, Michael Fuhr wrote: > On Thu, Mar 02, 2006 at 01:16:47AM -0500, Tom Lane wrote: > > Michael Fuhr <mike@fuhr.org> writes: > > > The libpq documentation has a list of environment variables, although > > > it's not complete: > > > http://www.postgresql.org/docs/8.1/interactive/libpq-envars.html > > > > Er, what's not complete about it? Feel free to send a doc patch ... > > Missing from that page are mostly standard variables that aren't > specific to PostgreSQL but that applications like psql might use. By "missing" and "incomplete" I didn't mean to suggest that the other variables belong in the libpq documentation; I just meant that various components of PostgreSQL use variables that aren't mentioned there. -- Michael Fuhr
Am Donnerstag, 2. März 2006 08:33 schrieb Michael Fuhr: > I see LC_COLLATE and LC_CTYPE in a few places but not in the > documentation for postgres/postmaster, which is where they appear > to be used (backend/main/main.c). Should those pages mention them? No, these variables are not used there, only by initdb. -- Peter Eisentraut http://developer.postgresql.org/~petere/
Try the PGDATESTYLE environment variable. Works in 7.4 and 8.1, though it is claimed to be deprecated. -- George Young On Wed, 01 Mar 2006 12:32:26 -0500 Mark Fenbers <Mark.Fenbers@noaa.gov> threw this fish to the penguins: > I want to get Pg (v7.4.7) to output a date field in a different format > than yyyy-mm-dd through the use of an environmental variable (because I > have no access the SQL). Is this possible? I know about the DATESTYLE > variable, but that seems to work only within a query transaction, and > has no effect if trying to set it as an envvar. > > Mark > > ---------------------------(end of broadcast)--------------------------- > TIP 5: don't forget to increase your free space map settings > -- "Are the gods not just?" "Oh no, child. What would become of us if they were?" (CSL)