无效的请求“分组依据”（oracle）

Posted 2023-02-16

【中文标题】无效的请求“分组依据”（oracle）

【英文标题】：Invalid request 'group by' (oracle)

【发布时间】：2021-12-17 03:26:25

【问题描述】：

请告诉我如何修复错误。一个错误Expression not in GROUP BY key 'isin'。

我了解我的分组不正确，但我不知道如何正确重做此请求的代码。这里需要找到end_circ 的最大值和stocks_full_id 键的最小值begin_circ。必须显示来自select 的所有列以及max 和min。

SELECT a.isin as id,
       a.state_number as number,
       a.update_time as valid_from_date,
       '2999-12-31 00:00:00' as valid_to_date,
       a.operdate as oper,
       a.inn as inn_num,
       a.name_eng as name,
       coalesce(ts.full_name_eng,a.name_eng) as full_nm,
       max (stg.end_circ) as end_date,
       min (stg.begin_circ) as start_date,
       case when sk.name_eng IS NULL then sk.name_uk else sk.name_eng end as subtype_nm
FROM (SELECT s.*, rank() over (PARTITION BY isin,state_number ORDER BY operdate desc) as rn
      FROM stocks s 
      WHERE isin IS NOT NULL and state_number IS NOT NULL) a
JOIN trading_stocks ts ON ts.emission_is=a.id
JOIN stocks_trading_grounds stg ON stg.stocks_full_id=a.id
JOIN stocks_kinds sk ON sk.id=a.kind_id
WHERE stg.end_circ >= "2021-01-01 00:00:00" and a.rn=1
GROUP BY stg.stocks_full_id

【问题讨论】：

sn-p不需要你的代码，请编辑你的代码

【参考方案1】：

您必须在 group by 子句中包含所有非聚合列。所以你更新的查询将是 -

SELECT a.isin as id,
       a.state_number as number,
       a.update_time as valid_from_date,
       '2999-12-31 00:00:00' as valid_to_date,
       a.operdate as oper,
       a.inn as inn_num,
       a.name_eng as name,
       coalesce(ts.full_name_eng,a.name_eng) as full_nm,
       max (stg.end_circ) as end_date,
       min (stg.begin_circ) as start_date,
       case when sk.name_eng IS NULL then sk.name_uk else sk.name_eng end as subtype_nm
FROM (SELECT s.*, rank() over (PARTITION BY isin,state_number ORDER BY operdate desc) as rn
      FROM stocks s 
      WHERE isin IS NOT NULL and state_number IS NOT NULL) a
JOIN trading_stocks ts ON ts.emission_is=a.id
JOIN stocks_trading_grounds stg ON stg.stocks_full_id=a.id
JOIN stocks_kinds sk ON sk.id=a.kind_id
WHERE stg.end_circ >= '2021-01-01 00:00:00' and a.rn=1
GROUP BY a.isin,
         a.state_number,
         a.update_time,
         a.operdate,
         a.inn,
         a.name_eng,
         coalesce(ts.full_name_eng,a.name_eng),
         case when sk.name_eng IS NULL then sk.name_uk else sk.name_eng end;

【参考方案2】：

GROUP BY 用于JOIN 中的单个表：

SELECT a.isin as id,
       a.state_number as number,
       a.update_time as valid_from_date,
       '2999-12-31 00:00:00' as valid_to_date,
       a.operdate as oper,
       a.inn as inn_num,
       a.name_eng as name,
       coalesce(ts.full_name_eng,a.name_eng) as full_nm,
       stg.end_date,
       stg.start_date,
       case when sk.name_eng IS NULL then sk.name_uk else sk.name_eng end as subtype_nm
FROM   (SELECT s.*,
               rank() over (PARTITION BY isin,state_number ORDER BY operdate desc) as rn
        FROM stocks s 
        WHERE isin IS NOT NULL
        and state_number IS NOT NULL
       ) a
       JOIN trading_stocks ts ON ts.emission_is=a.id
       JOIN stocks_kinds sk ON sk.id=a.kind_id
       JOIN (
         SELECT stocks_full_id,
                max(stg.end_circ) as end_date,
                min(stg.begin_circ) as start_date
         FROM   stocks_trading_grounds
         GROUP BY stocks_full_id
       ) stg
       ON stg.stocks_full_id=a.id
WHERE  stg.end_date >= DATE '2021-01-01'
AND    a.rn=1

此外，双引号不用于字符串文字；它们用于带引号的标识符。使用单引号 '2021-01-01 00:00:00' 表示字符串文字或使用 DATE '2021-01-01' 表示日期文字。