Filter duplicate rows based on a field

Question

I have several records (bills) that are basically duplicates of each other, except for one field, which represents the language that bill is in.

For example:

<

Answer 1

Probably the easiest way would be to use ROW_NUMBER and PARTITION BY

SELECT * FROM (
   SELECT b.*,
   ROW_NUMBER() OVER (PARTITION BY BillID ORDER BY Lang) as num
   FROM Bills b
   WHERE Account = 'abcd'
) tbl
WHERE num = 1

Answer 2

Use SELECT DISTINCT keyword to get different values SELECT DISTINCT ID,BillID,Account,Name,Amount,Lang FROM Bills; You will get different values.

Answer 3

 select
 BillID,Account,Name,Amount,max(Lang)
 FROM Bills 
 WHERE Account='abcd'
 group by BillID,Account,Name,Amount;

Same as user2407394 except without the ID in the groupby, since that would return 3 too.

Answer 4

select
ID,BillID,Account,Name,Amount,max(Lang)
FROM Bills 
WHERE Account='abcd'
group by BillID,Account,Name,Amount;

Given that you are not giving priority to any specific language if there is same bill in multiple languages. The above query will work perfect.

EDIT : Removed "ID" from group by. @Phil You are right..!!