Re: SELECT INTO array[i] with PL/pgSQL

On 07/02/11 22.15, Julia Jacobson wrote:
> Dear PostgreSQL community,
>
> Please consider the following minimal example:
>
> CREATE TABLE example (row_id SERIAL, value TEXT);
> INSERT INTO example(value) VALUES ('val1');
> INSERT INTO example(value) VALUES ('val2');
> INSERT INTO example(value) VALUES ('val3');
>
> CREATE OR REPLACE FUNCTION foo()
> RETURNS TEXT
> AS
> $$
> DECLARE
> a TEXT;
> b TEXT[];
> i INT;
> BEGIN
> FOR i in 1..3 LOOP
> SELECT INTO a value FROM example WHERE row_id=i; -- This works
> b[i] := a; -- perfectly!
> -- SELECT INTO b[i] value FROM example WHERE row_id=i; Doesn't work!
> END LOOP;
> RETURN b[2];
> END;
> $$
> LANGUAGE 'plpgsql';

this one seems work...

CREATE OR REPLACE FUNCTION foo()
RETURNS TEXT
AS
$$
DECLARE
   b TEXT[];
   i INT;
BEGIN
   FOR i in 1..3 LOOP
     b[i]:= value FROM example WHERE row_id=i;
   END LOOP;
     RETURN b[2];
END;
$$
LANGUAGE 'plpgsql';


Edoardo