Question

Each record in the database has multiple columns.

How to select those records that belong to the top 100 records in both column X and column Y?

Answer 1

select *
from table_name
where column_x in (
    select top 100 column_x
    from table_name 
    order by column_x )
and column_y in (
    select top 100 column_y
    from table_name
    order by column_y );