| From: | Vincenzo Romano <vincenzo(dot)romano(at)notorand(dot)it> |
|---|---|
| To: | Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-general(at)postgresql(dot)org |
| Subject: | R: Re: R: Re: Weird EXECUTE ... USING behaviour |
| Date: | 2010-01-13 21:39:15 |
| Message-ID: | 3eff28921001131339m1ab06720m92995977eb02026b@mail.gmail.com |
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| Lists: | pgsql-general |
My issue involves the USING predicates, though.
Il giorno 13 gen, 2010 10:26 p., "Adrian Klaver" <adrian(dot)klaver(at)gmail(dot)com>
ha scritto:
On 01/13/2010 09:37 AM, Vincenzo Romano wrote: > > 2010/1/13 Vincenzo
Romano<vincenzo(dot)romano(at)notoran(dot)(dot)(dot)
CREATE OR REPLACE FUNCTION public.alter_test(tbl text)
RETURNS void
LANGUAGE plpgsql
AS $function$
DECLARE
len integer :=3;
BEGIN
RAISE NOTICE '%,%' ,len,$1;
EXECUTE '
alter table '||tbl||' add check(length(tc_table_code) <
'||len||' )';
RETURN;
END;
$function$
Some playing around got the above to work for a test case on my machine
(8.4). The substitution is done before the check is parsed.
--
Adrian Klaver adrian(dot)klaver(at)gmail(dot)com
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