Question

我选择了哪种功能完美。

update ClientS set StatusID=4
where ClientID= (select P.ClientID
   ,LastName+' '+FirstName as Name 
   ,Address
   ,max(p.PickupDate)as 'Last Pickup'
   ,DATEDIFF(month,max(p.PickupDate),GETDATE())as'last pickup was months ago'
from Pickup P
join Clients C on P.ClientID= C.ClientID
where WIC=0 and C.StatusID = 1 or WIC=0 and C.StatusID = 2
group by p.clientid, lastname + ' ' + firstname,address
order by 4)

我需要根据此选择中的一个last pickup was months ago更新声明。我需要在StatusID表中更新客户端Clients，并将其设置为4，仅适用于此选择中超过2个月前最后一次提取的客户。到目前为止我有这个

create procedure pr_UpdateStatusHwoPickupMoreThanTwoM 
AS
update ClientS set StatusID=4
where ClientID= (select P.ClientID
   ,LastName+' '+FirstName as Name 
   ,Address
   ,max(p.PickupDate)as 'Last Pickup'
   ,DATEDIFF(month,max(p.PickupDate),GETDATE())as'last pickup was months ago'
from Pickup P
join Clients C on P.ClientID= C.ClientID
where WIC=0 and C.StatusID = 1 or WIC=0 and C.StatusID = 2
group by p.clientid, lastname + ' ' + firstname,address
order by 4)

我知道这是不对的，我需要以某种方式指明最后一次提货超过2个月之前，但无法确定如何更改StatusID仅针对那些ClientID。任何想法怎么做？

Answer 1

尝试此查询

对于SQL SERVER

update ClientS set StatusID=4
where ClientID= (select P.ClientID
from Pickup P
join Clients C on P.ClientID= C.ClientID
where WIC=0 and C.StatusID = 1 or WIC=0 and C.StatusID = 2
group by p.clientid 
having max(p.PickupDate) < DATEADD(month,-2,GETDATE()));

您的内部查询返回1行的多个列，您只与clientId进行比较，因为您没有获得所需的结果。

Answer 2

试试这个

update C
set StatusID=4
from (SELECT P.ClientID, MAX(p.PickupDate) MaxPickupDate
      FROM @Pickup P
      group by P.Clientid) P
     join @Clients C on P.ClientID= C.ClientID
where C.WIC=0 and C.StatusID in (1, 2)
      AND P.MaxPickupDate<DATEADD(month,-2,GETDATE())

另外，你错了吗

where WIC=0 and C.StatusID = 1 or WIC=0 and C.StatusID = 2

对于WIC = 0的任何行，这种情况都是正确的，你可以这样纠正

WHERE WIC=0 AND C.StatusID in (1,2)

基于选择SQL服务器的更新语句

2 个答案: