MySQL 5.7

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select version();


version()


5.7.26


create table build (`datetime` datetime)
insert into build values ('2015-01-01 18:30:22')
UPDATE
  build
SET
  `datetime` = '2019' + RIGHT(`datetime`, 15)
WHERE
  `datetime` LIKE '2015%'
Incorrect datetime value: '2015%' for column 'datetime' at row 1