Re: Dynamic Query for System functions - now()

>
> 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