On Fri, Jan 21, 2005 at 12:41:09PM +0100, KÖPFERL Robert wrote:
>
> I just tried hard to return
> a single record fromout a plpgsql-function. While the (otherwise excelent)
> documentation didn't give me an answer, I found out that this works:
>
> select into ret false, balance, balance;
> return ret;
>
> while ret is a composite type.
>
> This construction however tastes not good to me. Is there a nicer way?
In the "Declarations" section of the PL/pgSQL documentation, under
"Row Types," is the following:
The individual fields of the row value are accessed using the usual dot notation, for example rowvar.field.
and under "RETURN" in the "Control Structures" section is this:
To return a composite (row) value, you must write a record or row variable as the expression.
So you could to the following:
ret.field1 := value1; ret.field2 := value2; ret.field3 := value3; RETURN ret;
Internally, however, each expression in the above assignments would
be evaluated using a SELECT statement, so whether this code is
"nicer" than what you wrote depends on what you mean by "nice."
--
Michael Fuhr
http://www.fuhr.org/~mfuhr/
