Oracle SQL：ORA-00937：不是单组组函数

Question

我正在尝试计算 ID 为 118 的外科医生在 2016 年赚取的金额

通过使用代码：

    select (sum(count(*) * professional_fee)) AS 
    "Total amount earned by 118"
    from operation, operation_type, staff
    where operation.actual_op = operation_type.op_code
    and staff.person_id = operation.surgeon
    and surgeon = 118
    and extract(YEAR from op_date) = 2016
    group by professional_fee;

我可以得到9600的正确结果

但是当我添加时

    select (sum(count(*) * professional_fee) **+ annual_basic_salary**) AS 
    "Total amount earned by 118"
    from operation, operation_type, staff
    where operation.actual_op = operation_type.op_code
    and staff.person_id = operation.surgeon
    and surgeon = 118
    and extract(YEAR from op_date) = 2016
    group by professional_fee, **annual_basic_salary**;

我得到错误：ORA-00937: not a single-group group function

这里是使用的表格：

Staff

Operation

Operation_type

Answer 1

这样的事情可以吗？ （我缩短了你的表格；不想打字太多。）

我没有修复您的查询，而是写了一个新的。我不知道你为什么使用 COUNT 函数；你算什么？如果您确实想使用您的代码，请查看@LoztInSpace 写的内容以及我在该答案下的评论。

另外，我尝试正确连接表并为所有列使用表别名。我建议你以后也这样做。没有它，很难猜测这些列属于哪个表。

SQL> with
  2  operation (actual_op, surgeon, op_date) as
  3    (select 'LO', 118, date '2016-05-06' from dual union all
  4     select 'HT', 118, date '2016-05-06' from dual union all
  5     select 'TS', 118, date '2016-05-07' from dual union all
  6     select 'TS', 111, date '2016-01-01' from dual
  7    ),
  8  operation_type (op_code, operation_name, professional_fee) as
  9    (select 'LO', 'Lobotomy'        , 1050 from dual union all
 10     select 'HT', 'Heart Transplant', 7500 from dual union all
 11     select 'TS', 'Tonsillectomy'   , 1050 from dual union all
 12     select 'AP', 'Appendicectomy', 750 from dual
 13    ),
 14  staff (person_id, annual_basic_salary) as
 15    (select 118, 20000 from dual union all
 16     select 111,  8000 from dual
 17    )
 18  select sum(t.professional_fee) + s.annual_basic_salary as result
 19  from operation_type t join operation o on o.actual_op = t.op_code
 20  join staff s on s.person_id = o.surgeon
 21  where s.person_id = 118
 22    and extract(year from o.op_date) = 2016
 23  group by s.annual_basic_salary;

    RESULT
----------
     29600

SQL>

Answer 2

我不明白你的组。你确定要吗？

直观上看起来像 + max(annual_basic_salary)

没有分组：

select (sum(professional_fee))+max(annual_basic_salary) AS 
    "Total amount earned by 118"
    from operation, operation_type, staff
    where operation.actual_op = operation_type.op_code
    and staff.person_id = operation.surgeon
    and surgeon = 118
    and  extract(year from o.op_date) = 2016