SQL statement for mysql to delete duplicate data and mysql to delete data

SQL statement for mysql to delete duplicate data and mysql to delete data

Create table tmp as select id FROM get_review_url WHERE (no, title, name, content) IN (SELECT no, title, name, content FROM get_review_url group by no, title, name, content having count (*)> 1) AND id not in (select min (id) FROM get_review_url group by no, title, name, content having count (*)> 1 ); delete from get_review_url WHERE id IN (SELECT id FROM tmp); drop table tmp;

Evaluate an SQL statement for deleting duplicate data from a mysql database: delete from article_chapter where aid not in (select max (aid) from article_chapter group by articleid, chaptername)
How do I write SQL statements that delete duplicate Row Records and retain a row in oracle Database? Delete from tab where rowid in (
Select rowid from (select rank () OVER (partition by repeated field order by rowid) t
FROM tab WHERE repeated field IN (select name1 from tab group by repeated field having count (repeated field)> 1) WHERE t> 1 );