Leetcode SQL q182.duplicate emails. #leetcodesql #sql #interviews

In this video , question 182. find duplicate emails?

GROUP BY - Used to group rows from a table based on the values of one or more columns.

HAVING - it is also similar to the where but it is used after the group by

COUNT - it is a aggregate function, used to count the number of entries.

Видео Leetcode SQL q182.duplicate emails. #leetcodesql #sql #interviews канала Harsh Choudhary