Обсуждение: Subqueries returning more than one value?

Hi,

I am using a function in a subquery, this works ok:

SELECT name, (SELECT p_my_func(1)) AS id FROM test;

However I would like to have the function return 2 values into the main
query... Something like this:

SELECT name, (SELECT p_my_func(1)) AS (id, type) FROM test;

Of course this gives the error:

ERROR:  subquery must return only one column

Is there any way around this?

Thanks for any help

adam


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hi,

Adam Witney wrote, On 5/11/2004 02:09:
> Hi,
> 
> I am using a function in a subquery, this works ok:
> 
> SELECT name, (SELECT p_my_func(1)) AS id
>   FROM test;
> 
> However I would like to have the function return 2 values into the main
> query... Something like this:
> 
> SELECT name, (SELECT p_my_func(1)) AS (id, type)
>   FROM test;
> 
> Of course this gives the error:
> 
> ERROR:  subquery must return only one column
> 
> Is there any way around this?

SELECT name,t.*  FROM (SELECT p_my_func(1)) AS t(id, type), test

C.