Re: create function problem

Kancha . wrote:
>
> > Hi,
> >
> > > create function usage(text)
> > > returns numeric
> > > as 'select ceil(sum(sessiontime)/60) from
> > ath_online
> > > where loginname=\'$1\' and startdate >= (select
> > > startdate from cst_package where status=\'t\' and
> > > cid=(select cid from cst_customer where
> > > loginname=\'$1\'));'
> > > language 'sql';
> >
> > Try to replace \'$1\' with just $1 (i.e. loginname =
> > $1).
> >
>
> the argument is a string so it has to be enclosed in
> quotes and \ is to escape the quote. replacing with
> just $1 will give error like following:

The argument is a string and $1 becomes a T_Param node of
type "text" in your case, which is a perfectly valid string
without the quotes. Don't get confused by the $ sign in the
parameter name. $1 is treated like a variable name.

Just try "exactly" what was suggested, including the
whitespaces surrounding the = operator. Write

loginname = $1

instead of

loginname=$1

This does not only make the code more readable for humans.
The parser likes it too.

Jan

>
> Unable to identify an operator '=$' for types
> 'varchar' and 'int4'
> You will have to retype this query using an
> explicit cast
>
>
>
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