如果只满足where子句中的语句,我将尝试更新desiredValue
fromupdatedTable
表,否则不应设置值。下面的陈述是否正确?
update updatedTable si
set desiredValue = select desiredValue
from otherTable sl
where sl.att1 = si.att1 and sl.att2 = si.att2;
最佳答案
尝试如下:
UPDATE updatedTable
set updatedTable.desiredValue = otherTable.desiredValue
FROM otherTable
WHERE updatedTable.att1 = otherTable.att1 and updatedTable.att2 = otherTable.att2