Question

我试图编写以下内容以获得WO_Count的运行总计，如下所示：我必须像WO_Count一样保持条件＆gt;请问有人帮我吗？如果我保持在哪里WO_Count＆gt; 1，我得到以下错误：

ORA-00904：＆＃34; WO_COUNT＆＃34;：无效的标识符 00904. 00000 - ＆＃34;％s：无效的标识符＆＃34;

select 
   Test1.id_number as Case_ID,
   count(*) over ( partition by Tes2.NAME ) as WO_Count
FROM Test1
INNER JOIN Test2 ON Test1.Test12Test2=Test2.ID

Answer 1

您需要使用派生表或公用表表达式嵌套查询：

select *
from 
 (
    select 
       Test1.id_number as Case_ID,
       count(*) over ( partition by Tes2.NAME ) as WO_Count
    FROM Test1
    INNER JOIN Test2 ON Test1.Test12Test2=Test2.ID  
 ) dt
WHERE WO_Count > 1

顺便说一下，您的点数不会返回正在运行的总计，而是组计数。

Answer 2

要获得运行计数，您可以使用ROW_NUMBER()分析函数：

SELECT t1.id_number as Case_ID,
       ROW_NUMBER() OVER (
         PARTITION BY t2.NAME
         ORDER BY     ROWNUM  /* or a column name */
       ) as WO_Count
FROM   Test1 t1
       INNER JOIN Test2 t2
       ON ( t1.Test12Test2 = t2.ID )

（注意：您也可以使用COUNT(*) OVER ( PARTITION BY ... ORDER BY ... )获取正在运行的计数，但在使用*计算行数时，它们是等效的。）

如果你想要第一个之后的所有行：

SELECT *
FROM   (
  SELECT t1.id_number as Case_ID,
         ROW_NUMBER() OVER (
           PARTITION BY t2.NAME
           ORDER BY     ROWNUM  /* or a column name */
         ) as WO_Count
  FROM   Test1 t1
         INNER JOIN Test2 t2
         ON ( t1.Test12Test2 = t2.ID )
)
WHERE  WO_Count > 1

分区函数Count（）结束

2 个答案: