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Message Posted: Wed, 26 Jan 2005 @ 22:56:00 GMT
I'm trying to update a data row in a table with data from a different row in the same table. I can simulate the process in a "select statement using a self join as indicated in the following SQL:
SELECT B.ASSOC_DISCOUNT_DOLLARS, B.TRXN_DATE, B.SHOP_NBR, B.SHOP_FLAG, A.ASSOC_DISCOUNT_DOLLARS, A.TRXN_DATE, A.SHOP_NBR, A.SHOP_FLAG FROM LNYQDATA.TDSHPTRXN_ASSOCIATE_DISC_TMP1 A, LNYQDATA.TDSHPTRXN_ASSOCIATE_DISC_TMP1 B , LNYQDATA.DYCALNDR D WHERE A.TRXN_DATE BETWEEN 1040201 AND 1050129 AND A.SHOP_NBR = B.SHOP_NBR AND A.TRXN_DATE = D.ACTIVITY_DATE AND D.FISC_LAST_YEAR_DAY = B.TRXN_DATE order by 2,3;
But what I need to do is apply this to an UPDATE request if possible. Is there any way to initiate a SELF JOIN in the UPDATE request. I don't know of any but thought someone out their might. Any ideas are welcome.
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