From: | Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com> |
---|---|
To: | "Michael P(dot) Soulier" <michael_soulier(at)mitel(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: trimming a column |
Date: | 2012-05-04 02:12:09 |
Message-ID: | 4FA33AF9.3050303@gmail.com |
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Thread: | |
Lists: | pgsql-general |
On 05/03/2012 06:01 PM, Michael P. Soulier wrote:
> Hi,
>
> I need to trim whitespace off of a whole column and replace the existing
> values with the trimmed ones.
>
> This isn't working
>
> update mytable set id = trim(id);
>
> I'm not sure of the correct syntax. Help appreciated.
Works here:
test=> SELECT version();
version
---------------------------------------------------------------------------------------
PostgreSQL 9.0.7 on i686-pc-linux-gnu, compiled by GCC gcc (SUSE
Linux) 4.6.2, 32-bit
test=> create table trim_test(fld_1 varchar);
CREATE TABLE
test=> INSERT INTO trim_test VALUES (' test ');
INSERT 0 1
test=> INSERT INTO trim_test VALUES (' test1 ');
INSERT 0 1
test=> INSERT INTO trim_test VALUES (' test2 ');
INSERT 0 1
test=> SELECT length(fld_1), fld_1 from trim_test ;
length | fld_1
--------+---------
6 | test
7 | test1
7 | test2
(3 rows)
test=> UPDATE trim_test set fld_1 = trim(fld_1);
UPDATE 3
test=> SELECT length(fld_1), fld_1 from trim_test ;
length | fld_1
--------+-------
4 | test
5 | test1
5 | test2
Sure you do not have an open transaction?
Say did the the UPDATE in one session inside a transaction without
issuing a COMMIT and looking at data in another session that will not
see changes until COMMIT is done.
>
> Mike
--
Adrian Klaver
adrian(dot)klaver(at)gmail(dot)com
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