解决 SQL Server 中“无法绑定多部分标识符”错误

Question

select distinct 
  l.username,
  p.payid,
  p.paymentdate,
  sum(p.paymentamount) as payment,
  b.balance as balance 
from 
  tblUserLoginDetail l,
  tblInvoicePaymentDetails p 
  left outer join tblPaymentCustomerBalance b 
    on p.accountnumber=10009 
    and p.payid=b.payid 
    and p.customerid=l.loginid
  group by  p.payid,p.paymentdate,b.balance,l.username

错误是：

Msg 4104, Level 16, State 1, Line 1
The multi-part identifier "l.loginid" could not be bound.

解决办法是什么？

Answer 1

FROM 子句中的 tblUserLoginDetail 和 tblInvoicePaymentDetails 有交叉连接，所以不能在 FROM 子句中使用 l.loginid

我认为您想要的是带有显式 INNER JOIN 的内容。我还分离了过滤器和连接条件：

select
    l.username,
    p.payid,
    p.paymentdate,
    sum(p.paymentamount) as payment,
    b.balance as balance
from
    tblUserLoginDetail l
    inner join
    tblInvoicePaymentDetails p On p.customerid=l.loginid 
    left outer join
    tblPaymentCustomerBalance b ON p.payid=b.payid
where
    p.accountnumber=10009
group by
   p.payid,p.paymentdate,b.balance,l.username