SQL

sql query to find duplicates in column

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

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

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 Duplicates by Composite

SELECT column1, column2, COUNT(*) as 'Count' 
FROM tablename 
GROUP BY column1, column2 
HAVING Count(*) > 1
ORDER BY [Count] DESC;

get duplicate entry sql

select barcode, name, count(*)
from product
group by barcode, name
HAVING count(*) > 1