/SQL/Remove duplicate old value in mysql

Remove duplicate old value in mysql

Mysql remove duplicates

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

Identify rows with 2 same column value and delete duplicate mysql

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)

Source: mysqltutorial.org

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

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

Source: stackoverflow.com

Remove duplicate old value in mysql

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;

Similar codes

1 vote141 views3 answers
Postgresql get difference between two dates
SQL
2 votes121 views2 answers
How to rename column name in sql server using query
SQL
0 vote123 views1 answer
Mysql 8 geo to json
SQL
0 vote141 views2 answers
Wordpress change url after migration mysql query
SQL
24 votes125 views5 answers
Import dump mysql
SQL
3 votes156 views2 answers
@sqlresultsetmapping
SQL
0 vote105 views1 answer
Sql get month and year from date
SQL
0 vote138 views1 answer
Sql today at midnight
SQL
8 votes110 views1 answer
How to remove tables from postgresql
SQL
-1 vote125 views1 answer
Concat two columns in sql server
SQL