MySQL错误“在DEFAULT子句中只能有一个带CURRENT_TIMESTAMP的TIMESTAMP列”，即使我没有做错任何错误

CREATE TABLE AlarmHistory
(
    id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
    value DOUBLE NOT NULL,
    startedStamp TIMESTAMP NOT NULL,
    finishedStamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
);
CREATE TABLE AlarmHistory
(
    id INT UNSIGNED