Lookup value from other sql table

Question

I have the following sql statement:

select A.transactionNumber,
A.DealNumber      
A.Group
from TableOne A

inner join TableTwo B     
on A.transactionNumber = B.tranNumber     
where B.ID = 111111  

this yields something like this

transactionnumber  |   DealNumber  |  Group
123                |   1           |   100
456                |   2           |   101

However, there's another table, tableThree, that translates the 'Group' into a string. It looks like this:

Group | GroupLookup
100   | Lookup1
101   | Lookup2
102   | Lookup3

So in summary, I'd like my select to return this:

transactionnumber  |   DealNumber  |  Group
123                |   1           |   Lookup1
456                |   2           |   Lookup2

I'm entirely sure that this is simple, however I'm a complete newbie and the presence of the first join in the select is throwing me, I'd very much appreciate any help.

Answer 1

If I correctly understood should be something like:

select A.transactionNumber,
A.DealNumber,     
C.GroupLookup AS [Group]
from TableOne A    
inner join TableTwo B     
on A.transactionNumber = B.tranNumber     
inner join TableThree C
on C.Group = A.Group
where B.ID = 111111