Re: sql and timestamp variable

From: nolan(at)celery(dot)tssi(dot)com
To: SJohnson6(at)bcbsm(dot)com (Johnson, Shaunn)
Cc: pgsql-general(at)postgresql(dot)org (\"pg-general E-mail\")
Subject: Re: sql and timestamp variable
Date: 2003-05-15 16:55:43
Message-ID: 20030515165543.4064.qmail@celery.tssi.com
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> select count(*) from db2_ps_regprof_$datemonth where mbr is null ;
>
> [/snip wishful thinking]
>
> How can you do this? Otherwise, I may have to do this in Perl,
> perhaps?

Try this in psql:

\set datemonth xxxxxxx (fill in whatever you need here)

select count(*) from db2_ps_regprof_:datemonth where mbr is null;

Is that what you're after?

You could even pre-load some values via the .psqlrc file (and update
that file with a cron job as needed) to pre-load some values:

select count(*) from db2_ps_regprof_:current where mbr is null;
select count(*) from db2_ps_regprof_:last where mbr is null;
etc.

There's some stuff in the psql documentation about % and backticks, but
that appears to only work with prompts. What would be nice would be if the
text in backticks could also be executed and the results fed into a
set command, so that you could do the following:

\set datemonth `select table_name from table_select where month = 'Jan';`
--
Mike Nolan

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