mysql remove duplicates
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.namemysql remove duplicates
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.namemysql remove duplicates
DELETE FROM table_name WHERE id
NOT IN ( SELECT id FROM table_name
GROUP BY field_1, field_2)mysql delete older duplicates
DELETE FROM CONTACTS
WHERE ID NOT IN
(SELECT *
FROM (SELECT max(ID)
FROM CONTACTS
GROUP BY EMAIL) t);
-- ⇓ Test it ⇓ (Fiddle source link)mysql delete older duplicates
delete test
from test
inner join (
select max(id) as lastId, email
from test
group by email
having count(*) > 1) duplic on duplic.email = test.email
where test.id < duplic.lastId;mysql remove duplicates
DELETE t1 FROM contacts t1
INNER JOIN contacts t2
WHERE
t1.id < t2.id AND
t1.email = t2.email;Code language: SQL (Structured Query Language) (sql)Copyright © 2021 Codeinu
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