SELECT WHERE Subitem ONLY include

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I have a simple table with two columns, Column A and B

A, B
1, 1
1, 2
1, 3
1, 4
1, 5

2, 1
2, 2
2, 3

3, 2
3, 6
3, 4

4, 1
4, 2
4, 3

Now I only want Values of Column A where Column B MUST have the values of 1,2 and 3
So the result would be 2 and 4.

I simply cant remember my SQL today... any help ??

SELECT DISTINCT(A) FROM my_Table WHERE ??????

Posted 1-May-13 1:55am

Paw Jershauge

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CHill60 1-May-13 8:01am

I was going to post <pre lang="sql">where B IN (1,2,3)</pre> but that would give you the result 1,2,3,4 ... so do you mean A must only be reported if B has all of 1 and 2 and 3 ? But from your sample data that would return 1, 2 and 4 ... can you clarify

Paw Jershauge 1-May-13 8:04am

Hey Chill60
Yes A should only be shown, if B contains 1,2,3 nothing more nothing less.
So 1 from A would not be shown as it also contains 4 and 5 in B column

CHill60 1-May-13 8:06am

gotcha. I'll have another look at it

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CHill60 · Accepted Answer · 2013-05-01T02:16:00

Probably not the nicest way to do this but it works and does have the advantage that it will work for any version of SQL

SQL

select DISTINCT (A) from my_Table
where A in (select A from my_Table where B = 1)
and A in (select A from my_Table where B = 2)
and A in (select A from my_Table where B = 3)
and A not in (select A from my_Table where B not in (1,2,3))

[Edit - made the last criterion a bit more generic]