Mysql I¨；我正在努力处理数据

我想在我称为“trainig_session”的表上使用DATAADD，但收到一条错误消息，我不明白为什么

SELECT start_time, DATAADD(start_time, INTERVAL duration MINUTE) AS 
end_time FROM training_session where activity = "Running"

I get a error message which i dont understand why

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在mysql中，您应该使用DATE\u ADD（）

或ADDDATE（）

SELECT start_time, DATE_ADD(start_time, INTERVAL duration MINUTE) AS end_time 
FROM training_session
 where activity = "Running"

SELECT start_time, ADDDATE(start_time, INTERVAL duration MINUTE) AS end_time 
FROM training_session
 where activity = "Running"