CODEWITHSUNDEEP
mysqlsql
Paul
Paul

Reputation: 89

Aggrgating Group Query (list newest Entry out of Group of same id )

Version:mysql Ver 14.14 Distrib 5.7.25, for Linux

Table articles:

id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(120) NOT NULL,
  `creator` varchar(45) NOT NULL,
  `versionid` varchar(45) NOT NULL,
  `content` mediumtext NOT NULL,
  `category` varchar(45) NOT NULL,
  `publishdate` varchar(120) NOT NULL,
  `state` varchar(45) NOT NULL,
  PRIMARY KEY (`id`)

When an article is updated he gets a new id, but versionid is the same. I can't find a query to Select all articles, but only the newest of those, which have the same versionid.

Upvotes: 0

Views: 32

Answers (1)

Zaynul Abadin Tuhin
Zaynul Abadin Tuhin

Reputation: 31991

use correlated subquery

    select t1.* from table_name t1
    where t1.id= ( select max(id) 
                    from table_name t2 where t1.versionid=t2.versionid
                 )

Upvotes: 1

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