SQL Server 游标语句 声明/打开/循环实例

SQL Server游标语句使用方法： 

代码如下：

--声明一个游标 DECLARE MyCursor CURSOR FOR SELECT TOP 5 FBookName,FBookCoding FROM TBookInfo//定义一个叫MyCursor的游标，存放for select 后的数据 --打开一个游标 OPEN MyCursor//即打开这个数据集 --循环一个游标 DECLARE @BookName nvarchar(2000),@BookCoding nvarchar(2000) FETCH NEXT FROM MyCursor INTO @BookName,@BookCoding//移动游标指向到第一条数据，提取第一条数据存放在变量中 WHILE @@FETCH_STATUS =0//如果上一次操作成功则继续循环 BEGIN print 'name'+@BookName FETCH NEXT FROM MyCursor INTO @BookName,@BookCoding//继续提下一行 END --关闭游标 CLOSE MyCursor --释放资源 DEALLOCATE MyCursor 

eg

代码如下

create table #a ( id varchar(20), name varchar(20) ) insert into #a select 1,'jack' insert into #a select 2,'join' insert into #a select 3,'make' declare mycursor cursor for select * from #a open mycursor declare @id varchar(20),@name varchar(20) fetch next from mycursor into @id,@name while @@fetch_status=0 begin select @id,@name fetch next from mycursor into @id,@name end close mycursor deallocate mycursor