1、第一步:在定义游标之前，需要先定义变量，本示例中只涉及三个需要用到的变量price，sums和name在查询分析器中输入一行代码declare @price float,@sums int,@name nvarchar(10)
3、第三步:打开游标并取一行数据，openc_updateTotalfetch next fromc_updateTotal into @price,@sums,@name
5、第五步:在循环中间添加更新语句来批量对每一行进行修改update product set total =@price*@sums where name=@name
7、第七步:完成，开始执行修改，以下为完整代码declare @price float,@sums int,@name nvar艘早祓胂char(10)declare c_updateTotal cursor forselect price , sums,name from productopen c_updateTotalfetch next from c_updateTotal into @price,@sums,@namewhile @@FETCH_STATUS=0begin--这里处理一些数据update product set total =@price*@sums where name=@namefetch next from c_updateTotal into @price,@sums,@nameendclose c_updateTotaldeallocate c_updateTotal
