Opposite of Distinct in MySQL

Question

I would like to know if there is an opposite of \"select distinct\" in sql ,so that i can use to get values from a table of only which has repeated multiple times.

Thank

Answer 1

select some_column, count(*)
from some_table
group by 1
having count(*) > 1;

On databases like mysql, you may even omit selecting count(*) to leave just the column values:

select some_column
from some_table
group by 1
having count(*) > 1;