[英]Partition Function Count() over
I'm trying to write the following in order to get a running total of WO_Count, like so: I have to keep condition like WO_Count > 1. Could any one help me please? 我正在尝试编写以下代码,以便获得诸如WO_Count的运行总计:我必须保持WO_Count> 1之类的条件。请问有人可以帮助我吗? If I keep where WO_Count > 1, I'm getting below error:
如果我将WO_Count保持在> 1的位置,则会出现以下错误:
ORA-00904: "WO_COUNT": invalid identifier 00904. 00000 - "%s: invalid identifier"
ORA-00904:“ WO_COUNT”:无效的标识符00904。00000-“%s:无效的标识符”
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
You need to nest your query, either using a Derived Table or a Common Table Expression: 您需要使用派生表或公共表表达式来嵌套查询:
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
Btw, your count doesn't return a running total , but a group count . 顺便说一句,您的人数不返回连续的总数 ,而是团体人数 。
To get a running count you can use the ROW_NUMBER()
analytic function: 要获得运行计数,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 )
(Note: you could also use COUNT(*) OVER ( PARTITION BY ... ORDER BY ... )
to get a running count but when you are counting rows, using *
, they are equivalent.) (注意:您还可以使用
COUNT(*) OVER ( PARTITION BY ... ORDER BY ... )
来获取运行计数,但是当您使用*
计数行时,它们是等效的。)
If you want all the rows after the first then: 如果要在第一行之后包含所有行,则:
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
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