SQL Server 2008:更新查询

Question

我有TableA与FKColumnID

我也有TableB带ColumnID和ColumnName

我如何更新TableA.FKColumnID以具有相同的值tableB.ColumnName？

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 >