如何提取关联账户年收入最高的联系人？

Question

我想提取所有关联帐户年收入最高的联系人，我使用下面的 SOQL 查询

select name, account.AnnualRevenue from contact where account.AnnualRevenue=(select MAX(account.AnnualRevenue) from contact)

我也在下面使用了SOQL查询

select name, account.AnnualRevenue from contact where account.AnnualRevenue=(select MAX(AnnualRevenue) from Account)

在这两个查询中我都得到“未知错误解析查询”错误 请帮助我如何实现这一目标。提前致谢

Answer 1

您的第一个查询：

select name, 
       account.AnnualRevenue        --> you are selecting column from ACCOUNT ...
from contact                        --> ... but - there's no ACCOUNT table in FROM clause
where account.AnnualRevenue = 
  (select MAX(account.AnnualRevenue) --> you are selecting column from ACCOUNT ...
   from contact                      --> ... but - there's no ACCOUNT in FROM clause
  );

类似的错误会导致您的第二个查询出现问题。

---

如果你把表格的描述贴出来会更容易协助；没有这些信息，我们只能猜测哪个列属于哪个表。我的猜测：

SQL> with
  2  account (account_id, contact_id, annualrevenue) as
  3    (select 100, 1, 100 from dual union all
  4     select 101, 2, 200 from dual
  5    ),
  6  contact (contact_id, name) as
  7    (select 1, 'Little' from dual union all
  8     select 2, 'Foot'   from dual
  9    ),

基于这样的样本数据，account表中的前

sort

行按

annualrevenue

降序排列（这意味着最高收入在顶部）：

 10  --
 11  temp as
 12    (select account_id, contact_id, annualrevenue,
 13       rank() over (order by annualrevenue desc) rnk
 14     from account
 15    )

最后，加入

contact

和

temp

并获取排名最高的行：

 16  select c.name, t.annualrevenue
 17  from contact c join temp t on t.contact_id = c.contact_id
 18  where t.rnk = 1;

NAME   ANNUALREVENUE
------ -------------
Foot             200

SQL>

---

即使您的表看起来不像那样，现在您有一个可以帮助您编写自己的查询的工作示例。