Apologies if this is basic for probably most of you but I just can't get my head around it.
I have a flat table in sql server which contains lots of duplicates, differing only by one column.
Id,Name,Desc,Date,Etc
1,abc,abc abc,2022-11-17,a
2,abc,abc abc,2022-11-17,a
5,def,def def,2022-11-17,a
4,abc,abc abc,2022-11-17,a
3,def,def def,2022-11-17,a
6,xyz,def def,2022-11-17,a
I'm trying to write a query that finds all duplicates excluding the ones with the highest Id. So for the above example it would return the following:
Id,Name,Desc,Date,Etc
1,abc,abc abc,2022-11-17,a
2,abc,abc abc,2022-11-17,a
3,def,def def,2022-11-17,a
There are many millions of rows to process so looking for something efficient. Any advice would be appreciated.
Regards
Tom