mysql delete duplicate rows but keep one

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Stefan Schnabeltier answered on April 17, 2020 Popularity 10/10 Helpfulness 5/10

answer mysql delete duplicate rows but keep one

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mysql delete duplicate rows but keep one

Comment

DELETE c1 FROM contacts c1
INNER JOIN contacts c2 
WHERE
    c1.id > c2.id AND 
    c1.email = c2.email;

Popularity 10/10 Helpfulness 5/10 Language sql

Source: www.mysqltutorial.org

Tags: rows sql

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Contributed on Feb 04 2021

Stefan Schnabeltier

0 Answers Avg Quality 2/10

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mysql remove duplicates

Comment

DELETE c1 FROM tablename c1
INNER JOIN tablename c2 
WHERE
    c1.id > c2.id AND 
    c1.unique_field = c2.unique_field;

Popularity 10/10 Helpfulness 6/10 Language sql

Source: Grepper

Tags: mysql mysq

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Contributed on Jun 18 2020

Matteoweb

0 Answers Avg Quality 2/10

mysql remove duplicates

Comment

DELETE t1 FROM subscriptions t1
INNER JOIN subscriptions t2 
WHERE 
    t1.id < t2.id AND 
    t1.user_id = t2.user_id AND t1.name = t2.name

Popularity 10/10 Helpfulness 5/10 Language sql

Source: Grepper

Tags: mysql mysq

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Contributed on Jun 18 2021

adeleyeayodeji

0 Answers Avg Quality 2/10

how to delete all duplicate items in mysql

Comment

DELETE FROM FriendsData WHERE fID 
       NOT IN ( SELECT fID FROM FriendsData 
                   GROUP BY UserID, FriendsUserID, IsSpecial, CreatedBy)

Popularity 10/10 Helpfulness 4/10 Language sql

Source: Grepper

Tags: items item

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Contributed on Apr 17 2020

Mobile Star

0 Answers Avg Quality 2/10

delete all duplicate rows keep the latest except for one in mysql

Comment

DELETE 
FROM
  `tbl_job_title` 
WHERE id NOT IN 
  (SELECT 
    * 
  FROM
    (SELECT 
      MAX(id) 
    FROM
      `tbl_job_title` 
    GROUP BY NAME) tbl)

Popularity 9/10 Helpfulness 4/10 Language sql

Source: stackoverflow.com

Tags: except ex

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Contributed on Apr 26 2021

Hurt Hamster

0 Answers Avg Quality 2/10

identify rows with 2 same column value and delete duplicate mysql

Comment

DELETE c1 FROM contacts c1
INNER JOIN contacts c2 
WHERE
    c1.id > c2.id AND 
    c1.email = c2.email;
Code language: SQL (Structured Query Language) (sql)

Popularity 9/10 Helpfulness 3/10 Language sql

Source: www.mysqltutorial.org

Tags: identify identif

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Contributed on Dec 27 2021

Troubled Toad

0 Answers Avg Quality 2/10

remove duplicates mysql

Comment

DELETE c1 FROM addresslist c1
INNER JOIN addresslist c2 
WHERE
    c1.id > c2.id AND 
    c1.`city` = c2.`city` AND
    c1.`province` = c2.`province` AND
    c1.`pgiRegion` = c2.`pgiRegion`

Popularity 9/10 Helpfulness 3/10 Language sql

Source: Grepper

Tags: mysql mysq

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Contributed on May 11 2022

Uninterested Unicorn

0 Answers Avg Quality 2/10

Remove duplicate old value in mysql

Comment

DELETE `yellow_page_content`
   from `yellow_page_content`
  inner join (
     select max(`id`) as lastId, `code`
       from `yellow_page_content`
      group by `code`
     having count(*) > 1) duplic on duplic.code = yellow_page_content.code
  where yellow_page_content.id < duplic.lastId;

Popularity 9/10 Helpfulness 3/10 Language sql

Source: Grepper

Tags: mysql mysq

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Contributed on Feb 01 2022

Blue-eyed Bison

0 Answers Avg Quality 2/10

mysql delete duplicate rows except one

Comment

-1

DELETE FROM NAMES
 WHERE id NOT IN (SELECT * 
                    FROM (SELECT MIN(n.id)
                            FROM NAMES n
                        GROUP BY n.name) x)

Popularity 10/10 Helpfulness 2/10 Language sql

Source: Grepper

Tags: except ex

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Contributed on Jul 18 2020

masterDev

0 Answers Avg Quality 2/10

how to delete duplicate entries in a column in mysql

Comment

-1

# Please write a DELETE statement and DO NOT write a SELECT statement.
# Write your MySQL query statement below
DELETE c1 FROM Person c1
INNER JOIN Person c2 
WHERE
    c1.id > c2.id AND 
    c1.email = c2.email;

#delete duplicate emails from table Person

Popularity 9/10 Helpfulness 2/10 Language sql

Source: Grepper

Tags: mysql mysq

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Contributed on Aug 16 2022

Divyesh Lahane

0 Answers Avg Quality 2/10

mysql delete duplicate rows but keep one

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mysql delete duplicate rows but keep one

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