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 vote278 views1 answer
Psql get table data types
SQL
0 vote260 views2 answers
Getting customers with no orders sql
SQL
1 vote256 views1 answer
Import in mysql without a software
SQL
0 vote281 views3 answers
Delete in SQL SERVER
SQL
1 vote264 views1 answer
Oracle split string
SQL
8 votes273 views1 answer
Sql remove leading spaces
SQL
20 votes262 views4 answers
Sqlite create table if not exists
SQL
0 vote223 views0 answer
SQL
0 vote272 views1 answer
Sql get month from date
SQL
0 vote244 views1 answer
Full syntax inner join
SQL