From: Christoph Haller <ch@rodos.fzk.de>
To: sgnerd@yahoo.com.sg
Cc: pgsql-sql@postgresql.org
Subject: Re: Dynamic Query for System functions - now()
Date: Mon, 10 Nov 2003 11:37:15 MET
Message-ID: <200311101037.LAA29518@rodos> (raw)
In-Reply-To: <017701c3a75a$0e3e6050$7502a8c0@hdsc.com>
>
> Dear Friends,
>
> I am using PostgreSQL 7.3.4 Server on RH Linux 7.2. I am trying to generate=
> a dynamic query to fetch the next month interval.
>
> select now()+ interval'1 month'; -- This is working fine.
>
> I wanna dynamically assign the interval number. i,e --> select now()+ inter=
> val'n month';
>
> For this I wanted to write a dynamic query.
> EXECUTE 'select now()+ interval\'' || 3|| 'month\'';
> Error
> ERROR: parser: parse error at or near "'select now()+ interval\''" at =
> character 9
>
> Help help me with this. I wanted to use this query inside a PLpgSQL functio=
> n.
>
> Regards
> Kumar
>
You'd probably want to use the to_char() function like this
EXECUTE 'select now()+ interval\'' ||to_char(3,'9')|| 'month\'';
The || operator is the string concatination operator.
Regards, Christoph
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To: pgsql-sql@postgresql.org
Cc: ch@rodos.fzk.de, sgnerd@yahoo.com.sg
Subject: Re: Dynamic Query for System functions - now()
In-Reply-To: <200311101037.LAA29518@rodos>
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