From: | uehara(dot)kazuki(at)po(dot)ntts(dot)co(dot)jp |
---|---|
To: | pgsql-bugs(at)postgresql(dot)org |
Subject: | BUG #9541: Result of TRIM function has changed |
Date: | 2014-03-12 09:37:53 |
Message-ID: | 20140312093753.335.3227@wrigleys.postgresql.org |
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Lists: | pgsql-bugs |
The following bug has been logged on the website:
Bug reference: 9541
Logged by: Kazuki Uehara
Email address: uehara(dot)kazuki(at)po(dot)ntts(dot)co(dot)jp
PostgreSQL version: 9.3.3
Operating system: CentOS release 5.6
Description:
Depending on the version, the result of the TRIM function is different.
I did the following steps.
1. Change the setting of search_path.
---------------------------------------------
search_path='test,pg_catalog,"$user",public'
---------------------------------------------
2. Run the following query.
-------------------------------------------
CREATE FUNCTION LTRIM(CHAR,text)
RETURNS text
AS 'ltrim'
LANGUAGE internal
STRICT;
SELECT '|' || TRIM(LEADING 'a' FROM 'abcd'::char(7)) || '|';
--------------------------------------------
Execution result of each version
PostgreSQL9.3.1
| postgres=# SELECT '|' || TRIM(LEADING 'a' FROM 'abcd'::char(7)) || '|';
| ?column?
| ----------
| |bcd|
| (1 row)
PostgreSQL9.3.2:
| postgres=# SELECT '|' || TRIM(LEADING 'a' FROM 'abcd'::char(7)) || '|';
| ?column?
| ----------
| |bcd|
| (1 row)
PostgreSQL9.3.3:
| postgres=# SELECT '|' || TRIM(LEADING 'a' FROM 'abcd'::char(7)) || '|';
| ?column?
| ----------
| |bcd |
| (1 row)
Thank you very much.
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