Question

这给了我一个使用外部资金的用户列表。

SELECT
  table_user.user as user,
  sum(table_deposit.amount) as TotalExternalDeposits,payby,pro_id
FROM table_deposit inner join table_user on table_deposit.user = table_user.user 
WHERE  table_deposit.pro_id <>  'Cash A/C'
AND  table_deposit.batch NOT LIKE  '%adj%'
AND table_deposit.batch NOT LIKE  'Xmas%'
AND table_deposit.batch NOT LIKE  'X-mas%'
group by table_user.user
order by table_user.user

现在我的问题是我需要一个没有使用外部资金的用户列表（TotalExternalDeposits = 0）。我输了。

当我尝试添加类似：HAVING TotalExternalDeposits = 0的内容时，我会得到一个空集。我知道有数千名用户没有使用外部资金。

Answer 1

假设join没有过滤掉您要查找的任何用户，您可以使用not：

SELECT table_user.user as user, sum(table_deposit.amount) as TotalExternalDeposits,payby,pro_id
FROM table_deposit inner join
     table_user
    on table_deposit.user = table_user.user 
WHERE not (`table_deposit`.pro_id <>  'Cash A/C' AND 
           `table_deposit`.batch NOT LIKE  '%adj%' AND
           table_deposit.batch NOT LIKE  'Xmas%' AND
           table_deposit.batch NOT LIKE  'X-mas%'
          )
group by `table_user`.user
order by `table_user`.user

但是，这会让用户拥有不是“外部资金”的帐户。也就是说，上面的用户拥有至少一个非外部资金账户。您可能希望确保没有帐户是外部资金（而不是任何）。在这种情况下，您希望将条件移动到having子句，您可以在其中计算匹配的行 - 并确保值为0：

SELECT tu.user as user, sum(td.amount) as TotalExternalDeposits, payby, pro_id
FROM table_user tu left outer join
     table_deposit td
     on td.user = tu.user 
group by tu.user
having sum((td.pro_id <>  'Cash A/C' AND 
            td.batch NOT LIKE  '%adj%' AND
            td.batch NOT LIKE  'Xmas%' AND
            td.batch NOT LIKE  'X-mas%'
           ) or td.user is null
          ) = 0
order by tu.user;

我还为表使用了表别名。我认为这样可以更容易阅读。

Answer 2

由于HAVING子句不起作用，听起来那些没有使用外部资金的用户在table_deposit中没有行。如果是这种情况，您的查询应该是：

SELECT
  table_user.user as user,
  0 as TotalExternalDeposits,
  payby,
  pro_id
FROM table_user 
WHERE user NOT IN (
  SELECT user
  FROM table_deposit
)

Answer 3

如果它是一个或者您只需要相反的查询集，只需反转标准：

SELECT
  table_user.user as user,
  sum(table_deposit.amount) as TotalExternalDeposits,payby,pro_id
FROM table_deposit inner join table_user on table_deposit.user = table_user.user 
WHERE  table_deposit.pro_id =  'Cash A/C'
OR  table_deposit.batch  LIKE  '%adj%'
OR table_deposit.batch  LIKE  'Xmas%'
OR table_deposit.batch  LIKE  'X-mas%'
group by table_user.user
order by table_user.user

Answer 4

我认为HAVING可以解决问题，但可能是因为您似乎忘记在payby条款中添加pro_id和GROUP BY是因为你尝试了别名。

 SELECT
   table_user.user as user,
   sum(table_deposit.amount) as TotalExternalDeposits,payby,table_deposit.pro_id
 FROM table_deposit inner join table_user on table_deposit.user = table_user.user 
 WHERE  table_deposit.pro_id <>  'Cash A/C'
 AND  table_deposit.batch NOT LIKE  '%adj%'
 AND table_deposit.batch NOT LIKE  'Xmas%'
 AND table_deposit.batch NOT LIKE  'X-mas%'
 GROUP BY table_user.user,payby,table_deposit.pro_id
 HAVING sum(table_deposit.amount) = 0
 ORDER BY table_user.user

选择相反的复杂查询行集

4 个答案: