Обсуждение: How to show the current schema or search path in the psql PROMP
Hi, I am trying to figure out how I can show the current search_path, or better the first search_path entry (the active schema) in the PROMPT variable for psql. Is there any way to do that? I couldn't find anything useful ... -- ★ Clemens 呉 Schwaighofer ★ IT Engineer/Web Producer/Planning ★ E-Graphics Communications SP Digital ★ 6-17-2 Ginza Chuo-ku, Tokyo 104-8167, JAPAN ★ Tel: +81-(0)3-3545-7706 ★ Fax: +81-(0)3-3545-7343 ★ http://www.e-gra.co.jp This e-mail is intended only for the named person or entity to which it is addressed and contains valuable business information that is privileged, confidential and/or otherwise protected from disclosure. If you received this e-mail in error, any review, use, dissemination, distribution or copying of this e-mail is strictly prohibited. Please notify us immediately of the error via e-mail to disclaimer@tbwaworld.com and please delete the e-mail from your system, retaining no copies in any media. We appreciate your cooperation.
On Wed, Jun 09, 2010 at 05:52:49PM +0900, Schwaighofer Clemens wrote: > Hi, > > I am trying to figure out how I can show the current search_path, or > better the first search_path entry (the active schema) in the PROMPT > variable for psql. > > Is there any way to do that? I couldn't find anything useful ... 5432 josh@josh# SHOW search_path; search_path ---------------- "$user",public (1 row) -- Joshua Tolley / eggyknap End Point Corporation http://www.endpoint.com
Вложения
On 06/11/2010 10:23 AM, Joshua Tolley wrote: > On Wed, Jun 09, 2010 at 05:52:49PM +0900, Schwaighofer Clemens wrote: >> Hi, >> >> I am trying to figure out how I can show the current search_path, or >> better the first search_path entry (the active schema) in the PROMPT >> variable for psql. >> >> Is there any way to do that? I couldn't find anything useful ... > > 5432 josh@josh# SHOW search_path; > search_path > ---------------- > "$user",public > (1 row) > > -- > Joshua Tolley / eggyknap > End Point Corporation > http://www.endpoint.com From here: http://www.postgresql.org/docs/8.4/interactive/functions-info.html current_schema[()] Maybe combined with %`command` The output of command, similar to ordinary "back-tick" substitution. http://www.postgresql.org/docs/8.4/interactive/app-psql.html -- Adrian Klaver adrian.klaver@gmail.com
On Wed, Jun 9, 2010 at 2:52 AM, Schwaighofer Clemens <clemens.schwaighofer@tequila.jp> wrote: > Hi, > > I am trying to figure out how I can show the current search_path, or > better the first search_path entry (the active schema) in the PROMPT > variable for psql. > > Is there any way to do that? I couldn't find anything useful ... http://www.postgresql.org/docs/8.3/static/app-psql.html#APP-PSQL-PROMPTING There are lots of things you can put into a prompt, but that doesn't appear to be one of them. Seems like a reasonable feature request.
On Fri, Jun 11, 2010 at 11:29 AM, Adrian Klaver <adrian.klaver@gmail.com> wrote: > On 06/11/2010 10:23 AM, Joshua Tolley wrote: >> >> On Wed, Jun 09, 2010 at 05:52:49PM +0900, Schwaighofer Clemens wrote: >>> >>> Hi, >>> >>> I am trying to figure out how I can show the current search_path, or >>> better the first search_path entry (the active schema) in the PROMPT >>> variable for psql. >>> >>> Is there any way to do that? I couldn't find anything useful ... >> >> 5432 josh@josh# SHOW search_path; >> search_path >> ---------------- >> "$user",public >> (1 row) >> >> -- >> Joshua Tolley / eggyknap >> End Point Corporation >> http://www.endpoint.com > > From here: > http://www.postgresql.org/docs/8.4/interactive/functions-info.html > current_schema[()] > > Maybe combined with > %`command` > > The output of command, similar to ordinary "back-tick" substitution. > > http://www.postgresql.org/docs/8.4/interactive/app-psql.html But that runs a shell command, how's that supposed to get the search_path? I've been trying to think up a solution to that and can't come up with one.
On 06/11/2010 11:10 AM, Scott Marlowe wrote: > On Fri, Jun 11, 2010 at 11:29 AM, Adrian Klaver<adrian.klaver@gmail.com> wrote: >> On 06/11/2010 10:23 AM, Joshua Tolley wrote: >>> >>> On Wed, Jun 09, 2010 at 05:52:49PM +0900, Schwaighofer Clemens wrote: >>>> >>>> Hi, >>>> >>>> I am trying to figure out how I can show the current search_path, or >>>> better the first search_path entry (the active schema) in the PROMPT >>>> variable for psql. >>>> >>>> Is there any way to do that? I couldn't find anything useful ... >>> >>> 5432 josh@josh# SHOW search_path; >>> search_path >>> ---------------- >>> "$user",public >>> (1 row) >>> >>> -- >>> Joshua Tolley / eggyknap >>> End Point Corporation >>> http://www.endpoint.com >> >> From here: >> http://www.postgresql.org/docs/8.4/interactive/functions-info.html >> current_schema[()] >> >> Maybe combined with >> %`command` >> >> The output of command, similar to ordinary "back-tick" substitution. >> >> http://www.postgresql.org/docs/8.4/interactive/app-psql.html > > But that runs a shell command, how's that supposed to get the > search_path? I've been trying to think up a solution to that and > can't come up with one. I tried running a psql command using current_schema. It got the schema, unfortunately on a different session than the one I was in. So no it will not work. -- Adrian Klaver adrian.klaver@gmail.com
Scott Marlowe <scott.marlowe@gmail.com> writes:
> But that runs a shell command, how's that supposed to get the
> search_path? I've been trying to think up a solution to that and
> can't come up with one.
Yeah, and you do *not* want the prompt mechanism trying to send SQL
commands...
regards, tom lane
On Fri, Jun 11, 2010 at 2:18 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote: > Scott Marlowe <scott.marlowe@gmail.com> writes: >> But that runs a shell command, how's that supposed to get the >> search_path? I've been trying to think up a solution to that and >> can't come up with one. > > Yeah, and you do *not* want the prompt mechanism trying to send SQL > commands... Would a more generic way to access pgsql settings in a \set prompt be useful?
Right now I added two simple wrappers in my .psqlrc \set shsh 'SHOW search_path;' \set setsh 'SET search_path TO' So I can at least set and check the schema more quickly. But seeing it in the PROMPT would be th best. On Sat, Jun 12, 2010 at 05:26, Scott Marlowe <scott.marlowe@gmail.com> wrote: > On Fri, Jun 11, 2010 at 2:18 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote: >> Scott Marlowe <scott.marlowe@gmail.com> writes: >>> But that runs a shell command, how's that supposed to get the >>> search_path? I've been trying to think up a solution to that and >>> can't come up with one. >> >> Yeah, and you do *not* want the prompt mechanism trying to send SQL >> commands... > > Would a more generic way to access pgsql settings in a \set prompt be useful? > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general > -- ★ Clemens 呉 Schwaighofer ★ IT Engineer/Web Producer/Planning ★ E-Graphics Communications SP Digital ★ 6-17-2 Ginza Chuo-ku, Tokyo 104-8167, JAPAN ★ Tel: +81-(0)3-3545-7706 ★ Fax: +81-(0)3-3545-7343 ★ http://www.e-gra.co.jp This e-mail is intended only for the named person or entity to which it is addressed and contains valuable business information that is privileged, confidential and/or otherwise protected from disclosure. If you received this e-mail in error, any review, use, dissemination, distribution or copying of this e-mail is strictly prohibited. Please notify us immediately of the error via e-mail to disclaimer@tbwaworld.com and please delete the e-mail from your system, retaining no copies in any media. We appreciate your cooperation.
On 14 Jun 2010, at 2:02, Clemens Schwaighofer wrote: > Right now I added two simple wrappers in my .psqlrc > > \set shsh 'SHOW search_path;' > \set setsh 'SET search_path TO' > > So I can at least set and check the schema more quickly. That only saves you a few key-presses though. Is your psql built with libreadline? Without it you don't get TAB-completion,that would be a nuisance! Alban Hertroys -- Screwing up is an excellent way to attach something to the ceiling. !DSPAM:737,4c160039286219954085656!
On Mon, Jun 14, 2010 at 19:10, Alban Hertroys <dalroi@solfertje.student.utwente.nl> wrote: > On 14 Jun 2010, at 2:02, Clemens Schwaighofer wrote: > >> Right now I added two simple wrappers in my .psqlrc >> >> \set shsh 'SHOW search_path;' >> \set setsh 'SET search_path TO' >> >> So I can at least set and check the schema more quickly. > > > That only saves you a few key-presses though. Is your psql built with libreadline? Without it you don't get TAB-completion,that would be a nuisance! even with readline it is quicker to type :shsh to see the current schema thant to type full thing. -- ★ Clemens 呉 Schwaighofer ★ IT Engineer/Web Producer/Planning ★ E-Graphics Communications SP Digital ★ 6-17-2 Ginza Chuo-ku, Tokyo 104-8167, JAPAN ★ Tel: +81-(0)3-3545-7706 ★ Fax: +81-(0)3-3545-7343 ★ http://www.e-gra.co.jp This e-mail is intended only for the named person or entity to which it is addressed and contains valuable business information that is privileged, confidential and/or otherwise protected from disclosure. If you received this e-mail in error, any review, use, dissemination, distribution or copying of this e-mail is strictly prohibited. Please notify us immediately of the error via e-mail to disclaimer@tbwaworld.com and please delete the e-mail from your system, retaining no copies in any media. We appreciate your cooperation.
On 14 Jun 2010, at 12:14, Schwaighofer Clemens wrote: > On Mon, Jun 14, 2010 at 19:10, Alban Hertroys > <dalroi@solfertje.student.utwente.nl> wrote: >> On 14 Jun 2010, at 2:02, Clemens Schwaighofer wrote: >> >>> Right now I added two simple wrappers in my .psqlrc >>> >>> \set shsh 'SHOW search_path;' >>> \set setsh 'SET search_path TO' >>> >>> So I can at least set and check the schema more quickly. >> >> >> That only saves you a few key-presses though. Is your psql built with libreadline? Without it you don't get TAB-completion,that would be a nuisance! > > even with readline it is quicker to type :shsh to see the current > schema thant to type full thing. Do you realise you only save 3 key-presses there, compared to "sh[TAB]sea[TAB];"? That's a rhetorical question btw, it'sentirely up to you to define any short-cuts you want. Alban Hertroys -- If you can't see the forest for the trees, cut the trees and you'll see there is no forest. !DSPAM:737,4c160855286213993713473!