mysql insert exists update
INSERT INTO table (column_list)
VALUES (value_list)
ON DUPLICATE KEY UPDATE
c1 = v1,
c2 = v2,
...;mysql insert exists update
INSERT INTO table (column_list)
VALUES (value_list)
ON DUPLICATE KEY UPDATE
c1 = v1,
c2 = v2,
...;mysql insert into if not exists
INSERT INTO table_name (firstname, lastname)
SELECT 'NEW FIRSTNAME', 'NEW LASTNAME'
FROM DUAL
WHERE NOT EXISTS(
SELECT 1
FROM table_name
WHERE firstname = 'NEW FIRSTNAME' AND lastname = 'NEW LASTNAME'
)
LIMIT 1;Copyright © 2021 Codeinu
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