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 FROM CONTACTS
WHERE ID NOT IN
(SELECT *
FROM (SELECT max(ID)
FROM CONTACTS
GROUP BY EMAIL) t);
-- ⇓ Test it ⇓ (Fiddle source link)mysql delete duplicate rows
DELETE FROM table_name
WHERE
id IN (
SELECT
id
FROM (
SELECT
id,
ROW_NUMBER() OVER (
PARTITION BY field_1
ORDER BY field_1) AS row_num
FROM
table_name
) t
WHERE row_num > 1
);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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