oracle MERGE INTO語句使用方法(有則更新無則插入)
阿新 • • 發佈：2019-01-15
MERGE INTO T_APP_TJWT T1 --要插入或更新的表即要判斷的表
USING (SELECT '1001' AS a,'1111' AS b,'3333' as C FROM dual) T2 --判斷資料的表
ON ( T1.WTID=T2.a AND T1.WTSM=T2.b)
WHEN MATCHED THEN --如有則更新
UPDATE SET T1.tjr = T2.c
WHEN NOT MATCHED THEN --如無則插入
INSERT (wtid) VALUES(T2.a);
更新或插入部分可註釋
USING (SELECT '1001' AS a,'1111' AS b,'3333' as C FROM dual) T2 --判斷資料的表
ON ( T1.WTID=T2.a AND T1.WTSM=T2.b)
WHEN MATCHED THEN --如有則更新
UPDATE SET T1.tjr = T2.c
WHEN NOT MATCHED THEN --如無則插入
INSERT (wtid) VALUES(T2.a);
更新或插入部分可註釋