[英]Oracle SQL - AVG function invalid identifier
and good afternoon. 和下午好。 Happy to post I haven't needed to post any questions in a bit and have instead started answering.
乐于发帖我不需要过一会儿发任何问题,而是开始回答。 Woo :)
::)
Anyway, my problem here is that I am trying to write a subquery that pulls my vendor, their part, and how much their part is. 无论如何,我的问题是我试图编写一个子查询来拉扯我的供应商,他们的部分以及他们的部分。 The vendor may supply the part many times, so I want to AVERAGE the price of the part.
供应商可能会多次提供零件,因此我想平均零件的价格。 Later, I am looking to see about any problem notices against those parts.
稍后,我希望了解有关这些零件的任何问题通知。 However, I can't reference the field that I am averaging later on.
但是,我以后不能引用我平均的字段。 What do I do?
我该怎么办?
The SQL looks as follows and is in ORACLE syntax: SQL如下所示,并采用ORACLE语法:
WITH
PartVendor AS
(
SELECT PARTNAME, PARTNUM, AVG(PARTPRICE), VENDNAME, VENDNUM
FROM PARTBL
INNER JOIN VENDTBL ON VENDNUM = PARTVENDNUM
GROUP BY PARTNAME, PARTNUM, VENDNAME, VENDNUM
),
PartProbs AS
(
SELECT PartVendor.*, PROBNUM, PROBDESC
FROM PartVendor
INNER JOIN PROBTBL ON PARTNUM = PROBPARTNUM
)
SELECT *
FROM PartProbs
Later on, I will do more. 稍后,我将做更多的事情。 But I keep getting an error on PARTPRICE telling me that it is an invalid identifier.
但是我不断在PARTPRICE上收到一个错误消息,告诉我这是一个无效的标识符。 Can anybody help?
有人可以帮忙吗?
You should name all columns in the CTE: 您应该命名CTE中的所有列:
WITH PartVendor AS (
SELECT PARTNAME, PARTNUM, AVG(PARTPRICE) as AVG_PARTPRICE, VENDNAME, VENDNUM
FROM PARTBL INNER JOIN
VENDTBL ON VENDNUM = PARTVENDNUM
GROUP BY PARTNAME, PARTNUM, VENDNAME, VENDNUM
),
. . .
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