Re: How to insert into 2 tables from a view?

Hi,

I am having a problem trying to figure out.  

I have two tables behind a view and am trying to figure out how to create the correct insert rule so that inserting into the view is redirected to the two tables.  I thought I had is solved using a stored procedure, but doing an insert into view ... returning id causes the insert to fail with this error:

ERROR:  cannot perform INSERT RETURNING on relation "orig_view"

HINT:  You need an unconditional ON INSERT DO INSTEAD rule with a RETURNING clause

We are running pg 9.0 and I think this version of PG is the bottleneck to getting this done.  Does anyone know how to get around it?  Below is a basic example demonstrating what we are wanting to do.

CREATE TABLE table1 (

  table1_id SERIAL PRIMARY KEY,

  table1_field1 TEXT

);

CREATE TABLE table2 (

  table1_id INTEGER NOT NULL PRIMARY KEY REFERENCES table1(table1_id) ON DELETE CASCADE,

  table2_field1 TEXT

);

CREATE VIEW orig_table AS

    SELECT table1_id, table1_field_1, table2_field1

      FROM table1

      JOIN table2 USING (table1_id);

CREATE FUNCTION orig_table_insert(in_table1_id integer, in_table1_field1 text, in_table2_field1 text)

    RETURNS SETOF orig_table

    LANGUAGE plpgsql

    AS

    $BODY$

    DECLARE

        v_table1_id table1.table1_id%TYPE

    BEGIN

        INSERT INTO table1 (

            table1_id, table1_field1

        ) VALUES (

            in_table1_id, in_table1_field1

        )   

        RETURNING table1_id

        INTO v_table1_id;

        INSERT INTO table2 (

            table1_id, table2_field1

        ) VALUES (

            v_table_id, in_table2_field1

        );

        RETURN QUERY SELECT table1_id, table1_field1, table2_field1

                       FROM orig_table

                      WHERE table1_id = v_table1_id;

    END;

    $BODY$;

    

CREATE RULE orig_table_insert_rule AS

    ON INSERT

    TO orig_table

    DO INSTEAD

       SELECT orig_table_insert(NEW.table1_id, NEW.table1_field1, NEW.table2_field1);

Thanks,

Chris