SQL Server 遊標更新

來源:互聯網
上載者:User

USE AdventureWorks2008R2;GODECLARE complex_cursor CURSOR FOR    SELECT a.BusinessEntityID    FROM HumanResources.EmployeePayHistory AS a    WHERE RateChangeDate <>          (SELECT MAX(RateChangeDate)          FROM HumanResources.EmployeePayHistory AS b          WHERE a.BusinessEntityID = b.BusinessEntityID) ;OPEN complex_cursor;FETCH FROM complex_cursor;UPDATE HumanResources.EmployeePayHistorySET PayFrequency = 2 WHERE CURRENT OF complex_cursor;CLOSE complex_cursor;DEALLOCATE complex_cursor;GO

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