游标使用的简单示例

SELECT * FROM aspnet_Roles
GO

DECLARE @role varchar(50) 
DECLARE CusCursor CURSOR FOR  select RoleName from aspnet_Roles 
OPEN CusCursor 
    FETCH NEXT FROM CusCursor INTO @role 
    WHILE (@@FETCH_STATUS = 0) 
    BEGIN
        SELECT @role
        --这里写SQL语句 
        FETCH NEXT FROM CusCursor  INTO @role  
    END
CLOSE CusCursor  
DEALLOCATE CusCursor 

如图所示：