我在为DATA_ADD奋斗

Question

我想在我称为“ trainig_session”的表上使用DATAADD，但收到一条错误消息，我不理解为什么。

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

My table My Error message

Answer 1

在mysql中，您应该使用DATE_ADD（）

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

或ADDDATE（）

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