CREATE OR REPLACE FUNCTION public.sp_user_get_credentials_by_email(email_address varchar)

  RETURNS TABLE (credential_id integer

               , user_id integer

               , password_hash varchar

               , password_salt varchar

               , created_at timestamp

               , last_updated_at timestamp

               , logical_value_return smallint) AS

$func$

DECLARE

   sproc_logical_value_return SMALLINT := 2;  -- you can assign at declaration time

BEGIN

   RETURN QUERY

      SELECT uc.credential_id,

             uc.user_id,

             uc.password_hash,

             uc.password_salt,

             uc.created_at,

             uc.last_updated_at

             sproc_logical_value_return  -- just put it in the SELECT list

      FROM   myapp_users_credentials                    AS uc

            JOIN   myapp_contacts_assoc                 AS ca

                ON      ca.user_id      = uc.user_id      

                    AND uc.expired_at   IS NULL

            JOIN   myapp_contacts                       AS c

                ON      c.contact_id    = ca.contact_id

                    AND uc.expired_at   IS NULL

      WHERE  

            c.value = $1

      AND   c.type  = 1

      AND   c.is_primary = 1

      LIMIT  1;

​

   IF NOT FOUND THEN

      RAISE EXCEPTION 'Credentials not found';

   END IF;

END

$func$  LANGUAGE plpgsql ROWS 1;

CREATE OR REPLACE FUNCTION public.sp_user_get_credentials_by_email(

                 IN  email_address varchar

               , OUT credential_id integer

               , OUT user_id integer

               , OUT password_hash varchar

               , OUT password_salt varchar

               , OUT created_at timestamp

               , OUT last_updated_at timestamp

               , OUT logical_value_return smallint) AS

$func$

BEGIN

​

   logical_value_return := 2;  -- assign separately or with SELECT list

​

   SELECT uc.credential_id, uc.user_id, uc.password_hash, uc.password_salt, uc.created_at, uc.last_updated_at

   INTO      credential_id,    user_id,    password_hash,    password_salt,    created_at,    last_updated_at

   FROM   myapp_users_credentials uc

   JOIN   myapp_contacts_assoc    ca ON ca.user_id = uc.user_id      AND uc.expired_at IS NULL

   JOIN   myapp_contacts          c  ON c.contact_id = ca.contact_id AND uc.expired_at IS NULL

   WHERE  c.value = $1

   AND    c.type = 1

   AND    c.is_primary = 1

   LIMIT  1;

​

   IF NOT FOUND THEN

      RAISE EXCEPTION 'Credentials not found';

   END IF;

​

END

$func$  LANGUAGE plpgsql;