FIND DUPLICATES IN COLUMN SQL

Finding duplicate column values in table with 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 values in sql

• SELECT first_name, COUNT (first_name) FROM employees
GROUP BY first_name
HAVING (COUNT(first_name) > 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 _tableGROUP BY _columnHAVING COUNT(*) > 1

FIND DUPLICATES IN COLUMN SQL

declare @YourTable table (id int, name varchar(10), email varchar(50))

INSERT @YourTable VALUES (1,'John','John-email')
INSERT @YourTable VALUES (2,'John','John-email')
INSERT @YourTable VALUES (3,'fred','John-email')
INSERT @YourTable VALUES (4,'fred','fred-email')
INSERT @YourTable VALUES (5,'sam','sam-email')
INSERT @YourTable VALUES (6,'sam','sam-email')

SELECT
    name,email, COUNT(*) AS CountOf
    FROM @YourTable
    GROUP BY name,email
    HAVING COUNT(*)>1

-1

Source: stackoverflow.com

Similar codes

0 vote97 views1 answer
Combine 2 columns search query mysql
SQL
1 vote95 views1 answer
Hexadec to sql REDSHIFT
SQL
0 vote138 views1 answer
Sql server system messeges
SQL
0 vote106 views1 answer
Mysql workbench format date
SQL
0 vote99 views1 answer
Mysql set column equal to another automatic
SQL
3 votes108 views3 answers
Stop mysql service ubuntu
SQL
0 vote107 views1 answer
Sql select upcoming birthdays
SQL
0 vote119 views2 answers
Oracle ora-00054 how to unlock
SQL
-1 vote106 views1 answer
Ssql to lowercqse
SQL
0 vote96 views1 answer
Create new table pl sql
SQL