Using the distinct function in SQL

Question

I have a SQL query I am running. What I was wanting to know is that is there a way of selecting the rows in a table where the value in on one of those columns is distinct? When

Answer 1

I'm not sure if I am understanding this right but couldn't you do

SELECT * FROM class WHERE teacher IN (SELECT DISTINCT teacher FROM class)

This would return all of the data in each row where the teacher is distinct