check duplicates sql code example
Example 1: select duplicates in sql
SELECT username, email, COUNT(*)
FROM users
GROUP BY username, email
HAVING COUNT(*) > 1
Example 2: sql query to find duplicates in column
SELECT name, COUNT(email)
FROM users
GROUP BY email
HAVING COUNT(email) > 1
Example 3: get duplicate records in sql
Multiple field=
SELECT username, email, COUNT(*)
FROM users
GROUP BY username, email
HAVING COUNT(*) > 1
Single field=
SELECT _column, COUNT(*)
FROM _table
GROUP BY _column
HAVING COUNT(*) > 1