在Oracle数据库中同时更新两张表的简单方法

update ZZ_TEST1 t1 set t1."text" = (
 select T2."text1" from ZZ_TEST2 t2 where T2."pid"=t1."id"
) 
WHERE EXISTS
(
 SELECT 1 FROM ZZ_TEST2 t2 where T2."pid"=t1."id"
)

update ZZ_TEST1 t1 set t1."text" = (
 select T2."text1" from ZZ_TEST2 t2 where T2."pid"=t1."id"
)
where t1."id" in (select "pid" from ZZ_TEST2 )

merge into ZZ_TEST1 t1 using ZZ_TEST2 t2 on (t1."id" =t2."pid") 
 
when matched then
 
update set t1."text"=t2."text1"

MERGE INTO ZZ_TEST1 t1 USING 
( 
SELECT  FROM ZZ_TEST2 X WHERE X. ROWID = 
（SELECT MAX（Y.ROWID） FROM ZZ_TEST2 Y WHERE X."id" = Y."id" ）
 ) 
t2 
ON (t1."id" = t2."pid") 
WHEN MATCHED THEN
UPDATE SET t1."text" = t2."text1"