CODEWITHSUNDEEP
sqldatabasedb2in-clause
user1412952
user1412952

Reputation: 401

Select Query by Pair of fields using an in clause

I have a table called players as follows:

First_Id    Second_Id     Name
1           1             Durant
2           1             Kobe
1           2             Lebron
2           2             Dwight
1           3             Dirk

I wish to write a select statement on this table to retrieve all rows whose first ids and second ids match a bunch of specified first and second ids.

So for example, I wish to select all rows whose first and second ids are as follows: (1,1), (1,2) and (1,3). This would retreive the following 3 rows:

First_Id    Second_Id    Name
1           1            Durant
1           2            Lebron
1           3            Dirk

Is it possible to write a select query in a manner such as:

SELECT * 
FROM PLAYERS
WHERE (First_Id, Second_Id) IN ((1,1), (1,2) and (1,3))?

If there is a way to write the SQL similar to the above I would like to know. Is there a way to specify values for an IN clause that represents multiple rows as illustrated.

I'm using DB2.

Upvotes: 40

Views: 55450

Answers (7)

Noor
Noor

Reputation: 36

If data is needed in below order:

First_Id Second_Id Name
1 1 Durant
1 2 Lebron
1 3 Dirk
2 1 Kobe
2 2 Dwight

then simple and easy way would be:

select * from players order by First_id, second_id;

"where" clause can be used if any condition is needed on any of the column.

Upvotes: 0

MichaelG
MichaelG

Reputation: 737

This syntax works in MySQL:

SELECT *
FROM PLAYERS
WHERE (First_Id, Second_Id) IN ((1,1), (1,2), (1,3))

Upvotes: 2

Merkurial
Merkurial

Reputation: 252

SELECT * FROM <your table> where (<field1>, <field2>, ...) in (SELECT <field1>, <field2>, ... FROM <your table> where <your condition>)

This worked wonder for me.

Upvotes: 1

user4235208
user4235208

Reputation:

This type of query works in DB2.

SELECT * FROM A
WHERE (C1, C2) IN (SELECT B1, B2 FROM B WHERE B3=1);

Upvotes: 0

Dom T.
Dom T.

Reputation: 51

Here's a very similar solution in postgresql:

SELECT tmp_table.val1, tmp_table.val2
FROM tmp_table
WHERE (tmp_table.val1, tmp_table.val2) not in (select tmp_table2.val1, tmp_table2.val2 from tmp_table2);

Upvotes: 5

SQLCurious
SQLCurious

Reputation: 524

With compound primary keys, I would concatenate the two ids and match compound strings.

select id1 + id2 as FullKey, *
from players
where FullKey in ('11','12','13')

(If ids are not strings, simply cast them as such.)

Upvotes: 2

bhamby
bhamby

Reputation: 15499

This works on my DB2 (version 9.7 on Linux/Unix/Windows) by using this syntax:

SELECT *
FROM PLAYERS
WHERE (First_Id, Second_Id) IN (VALUES (1,1), (1,2), (1,3))

This syntax won't work on DB2 on the Mainframe (at least in version 9.1) because you can't substitute a sub-select with a VALUES expression. This syntax will work:

SELECT *
FROM PLAYERS
WHERE (First_Id, Second_Id) IN (SELECT 1, 1 FROM SYSIBM.SYSDUMMY1 UNION ALL
                                SELECT 1, 2 FROM SYSIBM.SYSDUMMY1 UNION ALL
                                SELECT 1, 3 FROM SYSIBM.SYSDUMMY1)

Upvotes: 43

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