Question

I have simplified this a bit to frame the question. There are more tables involved but this is the core of the problem:

So I have a table with just 2 columns in it in MSSQL 2008.

GroupID   |  Culture
1         |  en-gb
2         |  fr-fr
3         |  en-gb
3         |  fr-fr
4         |  en-gb
4         |  fr-fr
4         |  es-es

I have no idea what the Group ID is but I want to be able to do the following:

1) Select en-gb only – returning me the unique row with the GroupId of 1 and NOT the rows with GroupIDs 3 and 4
2) Select en-gb AND fr-fr to give me the GroupID of 3

I did have a look around for any examples of this – but its possible Im not even thinking of the correct search terms. thanks.

Answer 1

Assuming you are searching for 'en-gb','fr-fr' below.

One way

SELECT GroupID
FROM   T
GROUP  BY GroupID
HAVING COUNT (CASE
                WHEN Culture IN ( 'en-gb', 'fr-fr' ) THEN Culture
              END) = 2
       AND COUNT(Culture) = 2 

(Edit: Removed DISTINCT following confirmation that a unique constraint exists to guarantee this isn’t needed)