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我需要在post_insert觸發器中創建select語句。如果是的話,那麼可能如何呢? 我想檢查另一個表記錄是否存在,那麼它會更新它,否則插入爲新記錄。請幫忙。表格6i如果存在記錄然後更新
我的塊代碼是我要運行
DECLARE
EXSIST_TYPE varchar2(50);
EXSIST_NAME varchar2(50);
EXSIST_COMPANY VARCHAR2(100);
BEGIN
SELECT PRO_TYPE, PRO_NAME, COMPANY_NAME INTO EXSIST_TYPE, EXSIST_NAME ,EXSIST_COMPANY FROM STOCK;
IF
:PURCHASE_DETAIL.PRO_TYPE <> EXSIST_TYPE AND
:PURCHASE_DETAIL.PRO_NAME <> EXSIST_NAME AND
:PURCHASE_DETAIL.COMPANY_NAME <> EXSIST_COMPANY THEN*/
IF
:PURCHASE.RADIO_TYPE = 'PURCHASE' THEN
INSERT INTO STOCK(
PRO_TYPE ,
PRO_NAME ,
COMPANY_NAME ,
QUANTITY ,
PURCHASE_RATE,
SALE_RATE ,
RACK_NUM
)
VALUES
(
:PURCHASE_DETAIL.PRO_TYPE,
:PURCHASE_DETAIL.PRO_NAME,
:PURCHASE_DETAIL.COMPANY_NAME,
:PURCHASE_DETAIL.QUANTITY,
:PURCHASE_DETAIL.PRICE,
:PURCHASE_DETAIL.SALE_PRICE,
:PURCHASE_DETAIL.RACK_NUM
);
END IF;
ELSIF
:PURCHASE_DETAIL.PRO_TYPE = EXSIST_TYPE AND
:PURCHASE_DETAIL.PRO_NAME = EXSIST_NAME AND
:PURCHASE_DETAIL.COMPANY_NAME = EXSIST_NAME THEN
IF
:PURCHASE.RADIO_TYPE = 'PURCHASE' THEN
UPDATE STOCK SET
STOCK.QUANTITY = STOCK.QUANTITY+:PURCHASE_DETAIL.QUANTITY
WHERE
STOCK.PRO_TYPE = :PURCHASE_DETAIL.PRO_TYPE AND
STOCK.PRO_NAME = :PURCHASE_DETAIL.PRO_NAME AND
STOCK.COMPANY_NAME= :PURCHASE_DETAIL.COMPANY_NAME;
ELSIF
:PURCHASE.RADIO_TYPE = 'PRCH_RETURN' THEN
UPDATE STOCK SET
STOCK.QUANTITY = STOCK.QUANTITY-:PURCHASE_DETAIL.QUANTITY
WHERE
STOCK.PRO_TYPE = :PURCHASE_DETAIL.PRO_TYPE AND
STOCK.PRO_NAME = :PURCHASE_DETAIL.PRO_NAME AND
STOCK.COMPANY_NAME = :PURCHASE_DETAIL.COMPANY_NAME;
END IF;
END IF;
END;
請幫助這個話題 –