From: | Steven Lembark <lembark(at)wrkhors(dot)com> |
---|---|
To: | pgsql-general(at)lists(dot)postgresql(dot)org |
Cc: | lembark(at)wrkhors(dot)com |
Subject: | Re: conditionally terminate psql script |
Date: | 2018-12-18 21:42:14 |
Message-ID: | 20181218154214.06bd0904.lembark@wrkhors.com |
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Lists: | pgsql-general |
On Mon, 17 Dec 2018 13:42:14 +0100
Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
> you need psql from PostgreSQL 10 and higher
>
> there is a \if statement
Q: What is the "abort cycle command"?
e.g.,
select count(1) < 1 as "lacks_rows";
from foobar
where blah blah
\gset
\if :lacks_rows
\echo foobar lacks rows to process.
\echo goodnight :-)
????????? <--- what goes here to stop execution?
\endif
The point is that adding many levels of if-block logic is becomes
difficult to maintain. It would be nice to stop execution without
having to nest everything one level deeper.
--
Steven Lembark 3920 10th Ave South
Workhorse Computing Birmingham, AL 35222
lembark(at)wrkhors(dot)com +1 888 359 3508
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