sql trigerr将空字符串设置为字段而不是＃db2 #mediqus

Posted 2021-05-13

CREATE TRIGGER TABLE1_ReplaceNulls ON TABLE1
AFTER INSERT, UPDATE
AS

--IF UPDATE(FIELDWNULL1) 
    BEGIN
        UPDATE TABLE1 
        SET FIELDWNULL1=iif(FIELDWNULL1 is null,'',FIELDWNULL1),
        FIELDWNULL2=iif(FIELDWNULL2 is null,'',FIELDWNULL2), 
        FIELDWNULL3=iif(FIELDWNULL3 is null,'',FIELDWNULL3), 
        FIELDWNULL4=iif(FIELDWNULL4 is null,'',FIELDWNULL4) 

        FROM inserted I INNER JOIN TABLE1
            ON I.PKFIELD = TABLE1.PKFIELD 
            --WHERE I.FIELDWNULL1 IS NULL;
    END;