From: Yudie <yudie@axiontech.com>
To: pgsql-sql@postgresql.org
Subject: Re: Format Function
Date: Mon, 17 Feb 2003 18:21:28 -0600
Message-ID: <014d01c2d6e3$aff25610$8401a8c0@yudie> (raw)
References: <009c01c2d6c6$fb985b90$8401a8c0@yudie>
<200302171256.59403.josh@agliodbs.com>
OK thanks for the answer.
I made my function with plpgsql to do formating,
It's not perfect but at least make it easy to do simple formating
==============================================
CREATE FUNCTION myformat(text,text) returns text as'
DECLARE
i integer;
n integer;
strtemp text;
BEGIN
i := length($2);
n := length($1);
strtemp='''';
WHILE i > 0 AND n > 0 LOOP
IF substr($2,i,1) = ''#'' THEN
strtemp := substr($1,n,1) || strtemp;
n := n - 1;
ELSE
strtemp := substr($2,i,1) || strtemp;
END IF;
i := i - 1;
END LOOP;
return strtemp;
END
' language 'PLPGSQL'
----- Original Message -----
From: "Josh Berkus" <josh@agliodbs.com>
To: "Yudie" <yudie@axiontech.com>; <pgsql-sql@postgresql.org>
Sent: Monday, February 17, 2003 2:56 PM
Subject: Re: [SQL] Format Function
Yudie,
> Is there any default function for formating string in postgre sql?
> for instance:
> Format('123ABCDE', '####-###-###') => '12-3AB-CDE'
>
> The closest function I know is the to_char() function but it only works
for
numbers
No, there isn't. You could write one, though. For example, you could
write:
(7.3 syntax)
CREATE FUNCTION yudie_format(text) RETURNS text AS
'SELECT SUBSTR($1, 1, 4) || ''-'' || SUBSTR($1,5,3) || ''-'' ||
SUBSTR($1,9,4);
' LANGUAGE SQL IMMUTABLE STRICT;
As a simple formatting function.
For that matter, it would be the work of a weekend for someone to write a
function in PL/Perl which would take a format mask and apply it to any text
string.
--
-Josh Berkus
Aglio Database Solutions
San Francisco
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Cc: yudie@axiontech.com
Subject: Re: Format Function
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