mysql remove duplicates
DELETE FROM table_name WHERE id
NOT IN ( SELECT id FROM table_name
GROUP BY field_1, field_2)mysql remove duplicates
DELETE FROM table_name WHERE id
NOT IN ( SELECT id FROM table_name
GROUP BY field_1, field_2)mysql delete duplicate rows but keep one
DELETE c1 FROM contacts c1
INNER JOIN contacts c2
WHERE
c1.id > c2.id AND
c1.email = c2.email;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)how to delete all duplicate items in mysql
DELETE FROM FriendsData WHERE fID
NOT IN ( SELECT fID FROM FriendsData
GROUP BY UserID, FriendsUserID, IsSpecial, CreatedBy)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 delete duplicate rows except one
DELETE FROM NAMES
WHERE id NOT IN (SELECT *
FROM (SELECT MIN(n.id)
FROM NAMES n
GROUP BY n.name) x)Copyright © 2021 Codeinu
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