游标提取语句重复调用第一行

Question

嗨，

我用简单的 select 语句创建了一个只有 10 行的游标当我要在 while @@fetch_status=0 之后打印时，它递归地只调用第一行，执行没有停止。我不知道为什么只显示第一行，光标不会移动到第二行

  Here below is my code

  declare cur_data  cursor for

 select DISTINCT pkd.boxnumber  from packagedetail pkd
 inner join PalletDetail pld on pld.boxnumber=pkd.boxnumber
 INNER JOIN TRACKING T ON T.BOXNUM=PKD.SCANBOXID
 where pkd.shipmentlocation='NYWH' AND pld.shipmentnumber='SH0675535'

 declare @boxnumber NVARCHAR(50)

 open cur_data 

 fetch next from cur_data  into @boxnumber
 while @@fetch_status=0
 begin

 print @boxnumber

END
close cur_data
deallocate cur_data

Answer 1

你还必须在你的 while 循环中获取 ...next ...

 ...
 open cur_data 
 fetch next from cur_data  into @boxnumber
 while @@fetch_status=0
 BEGIN
     print @boxnumber
     fetch next from cur_data  into @boxnumber
 END
 ...

游标提取语句重复调用第一行

cursor fetch statement calling first row repetedly

sql

cursor

sql-server-2008