SQL Server 游标语句 声明/打开/循环实例

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 

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