S.ID 00904无效的标识符

Question

我有3张桌子要加入：

ALERT_CASE_HEADER
 - alert_key
ALERT_ITEM
- entity_key
-status_id
-entity_name='Active Alert'
STATUSES
-name
-id

两个警报表都使用alert_key和entity_key进行链接。仅当两个键具有相同值并且每个可用状态名称为entity_name='Active Alert'时才会进行大小写的总和。表STATUSES中的id列链接到ALERT_ITEM.status_id

我可以这样做吗？我试着运行脚本但看起来很慢。

SELECT 
  SUM(
    CASE
      WHEN s.name = 'Pending' 
      AND ach.alert_key = ai.entity_key 
      AND ai.entity_name = 'Active Alert' 
      THEN 1 
      ELSE 0 
    END
  ) AS PENDING, SUM(
    CASE
      WHEN s.name = 'new' 
      AND ach.alert_key = ai.entity_key 
      AND ai.entity_name = 'Active Alert' 
      THEN 1 
      ELSE 0 
    END
  ) AS NEW, SUM(
    CASE
      WHEN s.name = 'cancel' 
      AND ach.alert_key = ai.entity_key 
      AND ai.entity_name = 'Active Alert' 
      THEN 1 
      ELSE 0 
    END
  ) AS CANCEL 
FROM
  STATUSES s, ALERT_CASE_HEADER ach, ALERT_ITEM ai;

（根据提问者11月14日和17日在9:53的回答本来应该是编辑：）

我正在使用的脚本如下所示，只关注2个连接语句。第二个连接正在工作但不是第一个。

 SELECT CUS.ORGUNIT_CODE AS ORGANIZATION_UNITS,
  SUM(
    CASE
      WHEN S.name = 'Pending' THEN 1 ELSE 0 
    END
    ) AS PENDING_AUTOCLOSURE, 
  SUM(
    CASE
      WHEN S.name = 'New' THEN 1 ELSE 0 
    END
    ) AS NEW, 
  SUM(
    CASE
      WHEN S.name = 'Under Investigation' THEN 1 ELSE 0 
    END
  ) AS UNDER_INVESTIGATION,
  SUM(
    CASE
       WHEN S.Name = 'Escalated' THEN 1 ELSE 0
    END
  ) AS ESCALATED,
   SUM(
    CASE
       WHEN S.Name = 'Recommend True Positive' THEN 1 ELSE 0
    END
  ) AS RECOMMEND_TRUE_POSITIVE,
   SUM(
    CASE
       WHEN S.Name = 'Reopen Under Investigation' THEN 1 ELSE 0
    END
  ) AS REOPEN_UNDER_INVESTIGATION
FROM
  STATUSES S,CUSTOMERS CUS,ALERT_ITEM AI
  JOIN ALERT_ITEM AI ON S.ID = AI.STATUS_ID
  JOIN ALERT_CASE_HEADER ACH ON AI.ENTITY_KEY = ACH.ALERT_KEY
WHERE AI.ENTITY_NAME = 'Active Alert'
AND   AI.ORGUNIT_ID = CUS.ORGUNIT_ID
GROUP BY CUS.ORGUNIT_CODE;

Answer 1

S.ID 00904无效的标识符

ORA-00904：字符串：无效标识符

原因：输入了列名   要么丢失要么无效。

操作：输入有效的列名称。一个   有效列名必须以字母开头，小于或等于   30个字符，仅由字母数字字符组成   特殊字符$，_和＃。如果它包含其他字符，那么   它必须用双引号括起来。它可能不是   保留字。

这些问题存在问题。

FROM
  STATUSES S,CUSTOMERS CUS,ALERT_ITEM AI
  JOIN ALERT_ITEM AI ON S.ID = AI.STATUS_ID
  JOIN ALERT_CASE_HEADER ACH ON AI.ENTITY_KEY = ACH.ALERT_KEY
WHERE AI.ENTITY_NAME = 'Active Alert'

第二行：为表STATUSES定义了别名S
第三行：别名S再次用于列S.ID 列无效 表示STAUTUSES表没有名为ID的列。
第二行：您已添加了2个表，并再次使用逗号。 这很糟糕，非常，非常，非常糟糕。切勿将ANSI样式连接与＆＃34;逗号语法＆＃34;混合使用，混合这些样式是噩梦的一种方法。
second＆amp;第三行：您重复了ALERT_ITEM AI

FROM
  STATUSES S

  ,CUSTOMERS CUS  /* change this to explicit join */

  JOIN ALERT_ITEM AI ON S.ID /* <<< wrong column name */   = AI.STATUS_ID

停止在表之间使用逗号。如果你还记得这个，那么你的SQL生活会更容易。

Answer 2

您可以使用：

SELECT 
  SUM(
    CASE
      WHEN s.name = 'Pending' THEN 1 ELSE 0 
    END
    ) AS PENDING, 
  SUM(
    CASE
      WHEN s.name = 'new' THEN 1 ELSE 0 
    END
    ) AS NEW, 
  SUM(
    CASE
      WHEN s.name = 'cancel' THEN 1 ELSE 0 
    END
  ) AS CANCEL 
FROM
  STATUSES s  
  join ALERT_ITEM ai on s.id=ai.status_id
  join ALERT_CASE_HEADER ach on ai.entity_key=ach.alert_key
where ai.entity_name = 'Active Alert'

Answer 3

查看您的代码我建议您以这种方式重构查询

使用表之间的连接而不是条件

  SELECT 
    SUM(
      CASE
        WHEN s.name = 'Pending' 
        THEN 1 
        ELSE 0 
      END
    ) AS PENDING
    , SUM(
      CASE
        WHEN s.name = 'new' 
        THEN 1 
        ELSE 0 
      END
    ) AS NEW
   , SUM(
      CASE
        WHEN s.name = 'cancel' 
        THEN 1 
        ELSE 0 
      END
    ) AS CANCEL 
  FROM STATUSES s
  INNER JOIN ALERT_ITEM ai ON s.id = ai.status_id 
      AND  ai.entity_name = 'Active Alert' 
  INNER JOIN  ALERT_CASE_HEADER ach ON ach.alert_key = ai.entity_key

新OP代码后更新

不要混合隐式和显式联接

   SELECT CUS.ORGUNIT_CODE AS ORGANIZATION_UNITS,
    SUM(
      CASE
        WHEN S.name = 'Pending' THEN 1 ELSE 0 
      END
      ) AS PENDING_AUTOCLOSURE, 
    SUM(
      CASE
        WHEN S.name = 'New' THEN 1 ELSE 0 
      END
      ) AS NEW, 
    SUM(
      CASE
        WHEN S.name = 'Under Investigation' THEN 1 ELSE 0 
      END
    ) AS UNDER_INVESTIGATION,
    SUM(
      CASE
         WHEN S.Name = 'Escalated' THEN 1 ELSE 0
      END
    ) AS ESCALATED,
     SUM(
      CASE
         WHEN S.Name = 'Recommend True Positive' THEN 1 ELSE 0
      END
    ) AS RECOMMEND_TRUE_POSITIVE,
     SUM(
      CASE
         WHEN S.Name = 'Reopen Under Investigation' THEN 1 ELSE 0
      END
    ) AS REOPEN_UNDER_INVESTIGATION
  FROM
    STATUSES S
    JOIN ALERT_ITEM AI ON S.ID = AI.STATUS_ID
    JOIN ALERT_CASE_HEADER ACH ON AI.ENTITY_KEY = ACH.ALERT_KEY
    INNER JOIN CUSTOMERS CUS ON  AI.ORGUNIT_ID = CUS.ORGUNIT_ID
  WHERE AI.ENTITY_NAME = 'Active Alert'
  GROUP BY CUS.ORGUNIT_CODE;

SQL案例

3 个答案:

S.ID 00904无效的标识符