Re: Create function statement with insert statement

Hi Chris,

Pleased to (finally) report success.  Here are the solutions:

INSERT
---------
DROP FUNCTION orderinsert() ;

CREATE OR REPLACE FUNCTION orderinsert() RETURNS OPAQUE AS '
BEGIN  IF NEW.CUSTOMER_ID ISNULL THEN     RAISE EXCEPTION "CUSTOMER_ID cannot be NULL value" ;  END IF ;  IF
NEW.CUSTOMER_SESSIONISNULL THEN     RAISE EXCEPTION "CUSTOMER_SESSION cannot be NULL value" ;  END IF ;
 
  INSERT INTO HEXORDERS ( CUSTOMER_ID, ORDER_KEY, DISTRIBUTOR_ID,
ORDER_AMOUNT, ORDER_GST )  VALUES ( NEW.CUSTOMER_ID, NEW.CUSTOMER_SESSION, 1, 0, 0 ) ;
  RETURN NEW ;
END ;
' LANGUAGE 'plpgsql' ;


DROP TRIGGER HEXCUST_TRIGGER1 ON HEXCUSTOMERS;

CREATE TRIGGER HEXCUST_TRIGGER1
AFTER INSERT ON HEXCUSTOMERS
FOR EACH ROW EXECUTE PROCEDURE orderinsert() ;


UPDATE
----------
DROP FUNCTION orderupdate() ;

CREATE OR REPLACE FUNCTION orderupdate() RETURNS OPAQUE AS '
BEGIN  IF NEW.ORDER_ID ISNULL THEN     RAISE EXCEPTION ''ORDER_ID cannot be NULL value'' ;  END IF ;  IF
NEW.CUSTOMER_IDISNULL THEN     RAISE EXCEPTION ''CUSTOMER_ID cannot be NULL value'' ;  END IF ;
 
  UPDATE HEXORDERS     SET ORDER_AMOUNT =
                  SELECT SUM(CUSTITEM_QUANTITY * (ITEM_BASEPRICE +
((CUSTITEM_USERS - 1) * ITEM_USEPRICE)))                  FROM HEXCUSTITEMS, HEXITEMS                  WHERE
HEXCUSTITEMS.CUSTOMER_ID= NEW.CUSTOMER_ID                  AND HEXCUSTITEMS.ORDER_ID = NEW.ORDER_ID
ANDHEXCUSTITEMS.ITEM_ID = HEXITEMS.ITEM_ID                  GROUP BY HEXCUSTITEMS.ORDER_ID,
 
HEXCUSTITEMS.CUSTOMER_ID ),     ORDER_GST =
                 SELECT SUM((CUSTITEM_QUANTITY * (ITEM_BASEPRICE +
((CUSTITEM_USERS - 1) * ITEM_USEPRICE))) * .1::numeric)                 FROM HEXCUSTITEMS, HEXITEMS
WHEREHEXCUSTITEMS.CUSTOMER_ID = NEW.CUSTOMER_ID                 AND HEXCUSTITEMS.ORDER_ID = NEW.ORDER_ID
AND HEXCUSTITEMS.ITEM_ID = HEXITEMS.ITEM_ID                 AND CUSTITEM_GST = TRUE                 GROUP BY
HEXCUSTITEMS.ORDER_ID,HEXCUSTITEMS.CUSTOMER_ID )  WHERE ORDER_ID = NEW.ORDER_ID  AND CUSTOMER_ID = NEW.CUSTOMER_ID ;
 
  RETURN NEW ;
END ;
' LANGUAGE 'plpgsql' ;

DROP TRIGGER HEXCUSTITEMS_TRIGGER1 ON HEXCUSTITEMS;

CREATE TRIGGER HEXCUSTITEMS_TRIGGER1
AFTER INSERT OR UPDATE ON HEXCUSTITEMS
FOR EACH ROW EXECUTE PROCEDURE orderupdate() ;

DROP TRIGGER HEXCUSTITEMS_TRIGGER3 ON HEXCUSTITEMS;

CREATE TRIGGER HEXCUSTITEMS_TRIGGER3
AFTER DELETE ON HEXCUSTITEMS
FOR EACH ROW EXECUTE PROCEDURE orderupdate() ;

I still need to test each case but it now creates without errors.  Thanks
for all your assistance.

Regards



----- Original Message -----
From: "Christoph Haller" <ch@rodos.fzk.de>
To: <pgsql-sql@postgresql.org>
Cc: <susan@hexworx.com>
Sent: Monday, March 17, 2003 7:25 PM
Subject: Re: [SQL] Create function statement with insert statement


> >
> > I can select from this table although the output is slightly
> different:
> >
> >  lanname  | lanispl | lanpltrusted | lanplcallfoid | lancompiler
> > ----------+---------+--------------+---------------+-------------
> >  internal | f       | f            |             0 | n/a
> >  C        | f       | f            |             0 | /bin/cc
> >  sql      | f       | f            |             0 | postgres
> > (3 rows)
> >
> That's ok, it changed slightly between versions.
>
> Did you make any progress?
>
> >
> > Try re-writing your function in PL/pgSQL. BTW, I think I saw from your
>
> > other post that you don't have PL/pgSQL installed in the database you
> > are using. See the createlang program or CREATE LANGUAGE statement:
> >
>
http://www.us.postgresql.org/users-lounge/docs/7.3/postgres/app-createlang.h
tml
>
> >
>
http://www.us.postgresql.org/users-lounge/docs/7.3/postgres/sql-createlangua
ge.html
>
> >
> I think Joe is right. Try PL/pgSQL, it's much more flexible anyway.
>
> Regards, Christoph
>
>
>
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