无法在SQL

Question

那么一旦运行一个查询更多使用SQL Server 2008，我有这个疑问，其作品我第一次运行它，但如果我尝试再次运行它，我得到一个错误

if (exists (select * from tempdb.INFORMATION_SCHEMA.TABLES where TABLE_NAME = '##a12')) 
begin 
drop table ##a12 
end 
else 
declare @p varchar(1000) 
declare @s varchar(5) 
declare @xx2 varchar(2000) 

set @p = '64-267-601' 
select top 1 @p=ivproduct from rpiv where upc=@p or ivproduct=@p 
select distinct storeid,color,wil,cast('OH' as varchar(4)) as TP into ##a12 from rpiv i, rpproducts p where i.ivproduct=p.productid and p.productid=@p 
insert into ##a12 select storeid,color,wil,'Rcvd' from ##a12 
insert into ##a12 select storeid,color,wil,'Sld' from ##a12 where tp='oh' 

DECLARE myCursor CURSOR FOR SELECT distinct size from rpiv where ivproduct=@p 
open MyCursor 
FETCH NEXT FROM myCursor into @S 
WHILE @@FETCH_STATUS = 0 
    begin 
    set @xx2='alter table ##a12 add ['+@s+'] varchar(5)' 
    exec(@xx2) 
    set @xx2='update a set a.['+@s+']=coalesce(b.onhand,0) from ##a12 a,rpiv b where a.tp=''oh'' and a.storeid=b.storeid and a.color=b.color and a.wil=b.wil and b.size='''+@s+'''' 
    exec(@xx2) 
    set @xx2='update a set a.['+@s+']=coalesce(b.PurchasedToDate,0) from ##a12 a,rpiv b where a.tp=''rcvd'' and a.storeid=b.storeid and a.color=b.color and a.wil=b.wil and b.size='''+@s+'''' 
    exec(@xx2) 
    set @xx2='update a set a.['+@s+']=coalesce(b.SoldtoDate,0) from ##a12 a,rpiv b where a.tp=''sld'' and a.storeid=b.storeid and a.color=b.color and a.wil=b.wil and b.size='''+@s+'''' 
    exec(@xx2) 
    set @xx2='update ##a12 set ['+@s+']='''' where ['+@s+'] =''0''' 
    exec(@xx2) 
    set @xx2='update ##a12 set ['+@s+']='''' where ['+@s+'] is null' 
    exec(@xx2) 

    FETCH NEXT FROM myCursor into @S 
    End 
Close myCursor 
DEALLOCATE myCursor 
if not exists(select * from ##a12 where wil<>'') 
begin 
alter table ##a12 drop column wil 
select * from ##a12 order by storeid,color,tp 
end 
else 
select * from ##a12 order by storeid,color,wil,tp 

这是我得到的错误：

Msg 207, Level 16, State 1, Line 14 
Invalid column name 'wil'. 
Msg 213, Level 16, State 1, Line 14 
Column name or number of supplied values does not match table definition. 

如果我重装我的管理工作室，它工作得很好，如果我手动删除该表它的工作原理也是如此。我曾经使用过，如果> drop语句在开始之前没有问题，但由于某种原因它现在没有采取。

Answer 1

尝试添加GO：

Close myCursor 
DEALLOCATE myCursor 
GO 

if not exists(select * from ##a12 where wil<>'') 
begin 

发生这种情况，因为当该批次被第二执行解析后，wil列已经删除，解析器没有意识到，这将是重当临时表被删除并重新创建时添加。

通过添加GO，可以将批次分成两个......并且当第二批次运行时，wil列再次存在。