用加入
update table1 t1 join table2
on t1.localizationEndKey=t2.localizationEndKey
and t1.language=t2.language
set t1.value=t2.value
语法来加入多个表的更新,
UPDATE T1
SET T1.VALUE=T2.VALUE
FROM TABLE1 T1
JOIN TABLE2 T2 ON T1.LOCALIZATIONENDKEY=T2.LOCALIZATIONENDKEY
AND T1.LANGUAGE=T2.LANGUAG