Question

I have an ItemList table where there is a groupID column and an itemID column (which can be 1, 2 or 3). What I’d like to do is return the data where the groupID has itemID’s 1, 2 AND 3.

I’ll illustrate below with some sample data:

GroupID       ItemID       

   1            1       
   2            1 
   2            2 
   2            3
   3            1
   3            2 
   4            1
   4            2
   4            3
   5            1
   5            2

And the data I’d like out of that would be:

GroupID       ItemID       

   2            1 
   2            2 
   2            3
   4            1
   4            2
   4            3

Any ideas how I’d achieve this?

Thanks

Answer 1

You can use EXISTS() queries to check the conditions, like so:

select i.GroupID, i.ItemID
from ItemList i
where 
exists (select 1 from ItemList where GroupID = i.GroupID and ItemID = 1)
and exists (select 1 from ItemList where GroupID = i.GroupID and ItemID = 2)
and exists (select 1 from ItemList where GroupID = i.GroupID and ItemID = 3)
order by i.GroupID, i.ItemID