END
ELSE
IF @Country = ''''Mexico''''
BEGIN
UPDATE CustomersMex
SET CustomersMex.Phone = Inserted.Phone
FROM CustomersMex JOIN Inserted
ON CustomersMex.CustomerID = Inserted.CustomerID
通过更新视图,测试触发器:
UPDATE CustomersView SET Phone = '''' 030-007xxxx'''' WHERE CustomerID = ''''ALFKI''''
SELECT CustomerID, Phone FROM CustomersView WHERE CustomerID = ''''ALFKI''''
SELECT CustomerID, Phone FROM CustomersGer WHERE CustomerID = ''''ALFKI''''
--------------------------------------------那么具体的讲,对于多列数据,如何计算方差呢?:
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