"FIND DUPLICATES IN COLUMN SQL" Code Answer's

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sql query to find duplicates in column

By Unusual UnicornUnusual Unicorn on Jun 01, 2020 
SELECT name, COUNT(email) 
FROM users
GROUP BY email
HAVING COUNT(email) > 1

Source: stackoverflow.com

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9

get duplicate records in sql

By Obedient OcelotObedient Ocelot on Jan 28, 2021 
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

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0

FIND DUPLICATES IN COLUMN SQL

By Motionless MantisMotionless Mantis on Aug 17, 2020 
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

Source: stackoverflow.com

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-1

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