Sql get rows with duplicate values

This article is tagged with: Sql get rows with duplicate values and mysql

sql get rows with duplicate values

/* Gets reps */
SELECT fieldA, COUNT(*)
FROM tableA
GROUP BY fieldA
HAVING COUNT(*) > 1
/* Use reps to filter results */
SELECT a.*
FROM tableA a
JOIN (
SELECT fieldA, COUNT(*) as 'count'
FROM tableA
GROUP BY fieldA
HAVING COUNT(*) > 1
) b
ON a.fieldA = b.fieldA

sql query to find duplicates in column

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

select duplicates in sql

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

This article is tagged with: Sql get rows with duplicate values and mysql