SQL Server 2008：更新查询

Question

我有带有FKColumnID TableA

我也有带有ColumnID和ColumnName TableB

如何将TableA.FKColumnID更新为与tableB.ColumnName相同的值？

Update TableA
Set TableA.ColumnName = TableB.ColumnName

Answer 1

你可以试试这个

UPDATE TableA
SET ColumnName = TableB.ColumnName
FROM TableA
JOIN TableB on TableA.FKColumnID = TableB.ColumnID
WHERE < any additional criteria >