0

我在这里有这个长的 sql 查询..

SELECT c.clientid, c.clientname, c.billingdate, 
case when (select ifnull(sum(total), 0) from invoice i
where i.client = c.clientid and i.isdeleted = 0) - (select ifnull(sum(p.amount), 0) from payment p inner join invoice i on p.invoice = i.invoiceid
where i.client = c.clientid and i.isdeleted = 0) < 0 and i.date < '2012-01-01' then (select ii.total from invoice ii where ii.client = c.clientid order by ii.invoiceid desc limit 1)  else (select ifnull(sum(total), 0) from invoice i
where i.client = c.clientid and i.isdeleted = 0) - (select ifnull(sum(p.amount), 0) from payment p inner join invoice i on p.invoice = i.invoiceid
where i.client = c.clientid and i.isdeleted = 0) end as remaining,
case c.isactive+0
        when '1' then 'Stop'
        else 'Start' 
        end as Active
FROM client c 
ORDER BY clientname

我收到此查询的错误，其中一行i.date < '2012-01-01'说这i.date是字段列表中的未知列...我该如何解决这个问题？

谢谢，J

4

2 回答 2

4

您alias i在子查询中使用了此处定义的范围外

(select ifnull(sum(total), 0) from invoice i
where i.client = c.clientid and i.isdeleted = 0)

与()

你应该改变包括这个：

and i.date < '2012-01-01'

在两个选择中

SELECT c.clientid, c.clientname, c.billingdate, 
case when (select ifnull(sum(total), 0) from invoice i
where i.client = c.clientid and i.isdeleted = 0 and i.date < '2012-01-01' ) - (select ifnull(sum(p.amount), 0) from payment p inner join invoice i on p.invoice = i.invoiceid
where i.client = c.clientid and i.isdeleted = 0 and i.date < '2012-01-01' ) < 0 then (select ii.total from invoice ii where ii.client = c.clientid order by ii.invoiceid desc limit 1)  else (select ifnull(sum(total), 0) from invoice i
where i.client = c.clientid and i.isdeleted = 0) - (select ifnull(sum(p.amount), 0) from payment p inner join invoice i on p.invoice = i.invoiceid
where i.client = c.clientid and i.isdeleted = 0) end as remaining,
case c.isactive+0
        when '1' then 'Stop'
        else 'Start' 
        end as Active
FROM client c 
ORDER BY clientname
于 2012-09-06T17:58:07.933 回答
0

你是 i.date 在子查询之外。就在这儿

SELECT c.clientid, c.clientname, c.billingdate, 
CASE WHEN 
    (select ifnull(sum(total), 0) from invoice i where i.client = c.clientid and i.isdeleted = 0)
    - 
    (select ifnull(sum(p.amount), 0) from payment p inner join invoice i on p.invoice = i.invoiceid where i.client = c.clientid and i.isdeleted = 0)
    < 0 
    and i.date < '2012-01-01'  -- THIS IS NOT PART OF THE SUBQUERY
THEN 
    (select ii.total from invoice ii where ii.client = c.clientid order by ii.invoiceid desc limit 1)  
ELSE 
    (select ifnull(sum(total), 0) from invoice i where i.client = c.clientid and i.isdeleted = 0) - (select ifnull(sum(p.amount), 0) from payment p inner join invoice i on p.invoice = i.invoiceid where i.client = c.clientid and i.isdeleted = 0) 
END as remaining,
case c.isactive+0
        when '1' then 'Stop'
        else 'Start' 
        end as Active
FROM client c 
ORDER BY clientname
于 2012-09-06T18:01:20.957 回答