Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
387 views
in Technique[技术] by (71.8m points)

sql - Multiple NOT distinct

I've got an MS access database and I would need to create an SQL query that allows me to select all the not distinct entries in one column while still keeping all the values.

In this case more than ever an example is worth thousands of words:

Table:

A B C
1 x q
2 y w
3 y e
4 z r
5 z t
6 z y

SQL magic

Result:

B C
y w
y e
z r
z t
z y

Basically it removes all unique values of column B but keeps the multiple rows of the data kept. I can "group by b" and then "count>1" to get the not distinct but the result will only list one row of B not the 2 or more that I need.

Any help?

Thanks.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
Select B, C
From Table
Where B In
    (Select B From Table
     Group By B
     Having Count(*) > 1)

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...