Обсуждение: PG_FUNCTION_ARGS: typeof arg ?

Hi,

is there a possibility to check the type of the nth argument of
PG_FUNCTION_ARGS ?

I'm trying to add another (optional) argument to a function that already
has an optional one.
So I need to know if the 4th arg is of type TEXT (or not of INT32).

TIA
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 e-Trolley Sayegh & John, Nabil Sayegh
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Nabil Sayegh wrote:
> is there a possibility to check the type of the nth argument of
> PG_FUNCTION_ARGS ?
>
> I'm trying to add another (optional) argument to a function that already
> has an optional one.
> So I need to know if the 4th arg is of type TEXT (or not of INT32).

There isn't a way to do it in 7.3, but you will be able to in 7.4 (and
can on 7.4devel/cvs HEAD):

  /*
   * Get the type OID of a specific function argument (counting from 0)
   *
   * Returns InvalidOid if information is not available
   */
Oid get_fn_expr_argtype(FunctionCallInfo fcinfo, int argnum)

Joe