Create Alias for PostgreSQL Table

Question

I have a table called assignments. I would like to be able to read/write to all the columns in this table using either assignments.column or homework.column, how can I do this?<

Answer 1

This is where I am with the trigger functions so far, any feedback would be greatly appreciated. It's a combination of http://vibhorkumar.wordpress.com/2011/10/28/instead-of-trigger/ and Update multiple columns in a trigger function in plpgsql

Table: iassignments_assignments

Columns:

published_assignment_id
name
filepath
filename
link
teacher
due date
description
published
classrooms

View: assignments_published - SELECT * FROM iassignments_assignments

Trigger Function for assignments_published

CREATE OR REPLACE FUNCTION assignments_published_trigger_func()
RETURNS TRIGGER
LANGUAGE plpgsql
AS $function$
   BEGIN
      IF TG_OP = 'INSERT' THEN
        EXECUTE format('INSERT INTO %s SELECT ($1).*', 'iassignments_assignments')
        USING NEW;
        RETURN NEW;
      ELSIF TG_OP = 'UPDATE' THEN
        DECLARE
          tbl = 'iassignments_assignments';
          cols text;
          vals text;
        BEGIN
          SELECT INTO cols, vals
           string_agg(quote_ident(attname), ', ')
           ,string_agg('x.' || quote_ident(attname), ', ')
          FROM   pg_attribute
          WHERE  attrelid = tbl
          AND    NOT attisdropped   -- no dropped (dead) columns
          AND    attnum > 0;        -- no system columns

          EXECUTE format('
          UPDATE %s t
          SET   (%s) = (%s)
          FROM  (SELECT ($1).*) x
          WHERE  t.published_assignment_id = ($2).published_assignment_id'
          , tbl, cols, vals)
          USING NEW, OLD;

          RETURN NEW;
        END
      ELSIF TG_OP = 'DELETE' THEN
       DELETE FROM iassignments_assignments WHERE published_assignment_id=OLD.published_assignment_id;
       RETURN NULL;
      END IF;
      RETURN NEW;
    END;
$function$;

Trigger

CREATE TRIGGER assignments_published_trigger
INSTEAD OF INSERT OR UPDATE OR DELETE ON
assignments_published FOR EACH ROW EXECUTE PROCEDURE assignments_published_trigger_func();

---

Table: iassignments_classes

Columns:

class_assignment_id
guid
assignment_published_id

View: assignments_class - SELECT * FROM assignments_classes

Trigger Function for assignments_class

**I'll create this function once I have received feedback on the other and know it's create, so I (hopefully) need very little changes to this function.

Trigger

CREATE TRIGGER assignments_class_trigger
INSTEAD OF INSERT OR UPDATE OR DELETE ON
assignments_class FOR EACH ROW EXECUTE PROCEDURE assignments_class_trigger_func();