Select duplicates in sql

SELECT username, email, COUNT(*)
FROM users
GROUP BY username, email
HAVING COUNT(*) > 1

Source: chartio.com

Sql query to find duplicates in column

SELECT name, COUNT(email) 
FROM users
GROUP BY email
HAVING COUNT(email) > 1

Source: stackoverflow.com

How to get duplicate elements in sql

• SELECT first_name, COUNT (first_name) FROM employees
GROUP BY first_name
HAVING (COUNT(first_name) > 1);

Sql query duplicate rows

/* This SQL Query will show each of those duplicate
rows individually instead of just grouping it */
SELECT username,email 
FROM `users` 
WHERE `username` 
IN (SELECT username FROM `users` GROUP BY username HAVING COUNT(username) > 1)

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