How to select multiple rows of mysql table as a single row

Question

I have member table like below

MemberID    Name     BookID
    1       ABC         10
    1       ABC         14
    2       XYZ         10
    3       PQR         14

I want to select a MemberID that contains both the BOOKID 10 and 14 in single row.

Expected Output:

MemberID
1

I have tried below code but it doesnt work:

select MemberID from member where BookID IN (10,14)

Answer 1

You can try like this:

SELECT MemberID, GROUP_CONCAT(BookID) AS BookID
FROM member
GROUP BY MemberID
HAVING FIND_IN_SET(10, BookID) > 0 AND FIND_IN_SET(14, BookID) > 0

Here is the SQLFIDDLE .

Another solution can be using JOIN like this:

SELECT x.MemberID
FROM member x
INNER JOIN member y ON x.MemberID = y.MemberID
  AND x.BookID = 10
  AND y.BookID = 14

Here is the SQLFIDDLE .

Answer 2

您可以使用DISTINCT关键字

 select distinct MemberID from member where BookID

Answer 3

What you will want to do is select distinct MemberID. Something like

SELECT  DISTINCT MemberID FROM member
WHERE BookID IN (10,14)

Assuming you want results for books with Id 10 or 12.