Three minutes was subtracted from the time stamp database \ in seconds

sqlserver timestamp:

Date stamp turn: SELECT DATEDIFF (S, '2019-05-10 09: 49: 59.100', GETDATE ());
date of transfer stamp: SELECT DATEDIFF (S, '2019-05-12 10: 49: 59.900' , GETDATE ());

相减分钟：SELECT (DATEDIFF(S,'2019-05-10 09:49:59.100', GETDATE())-DATEDIFF(S,'2019-05-12 10:49:59.900', GETDATE()))/60；

相减秒数：SELECT (DATEDIFF(S,'2019-05-10 09:49:59.100', GETDATE())-DATEDIFF(S,'2019-05-12 10:49:59.900', GETDATE()))；

 

myql timestamp subtraction:

Subtraction min: select timestampdiff (SECOND, '2015-05-04 12:00', '2015-05-04 12:01:30') / 60;

Phase seconds Less: select timestampdiff (SECOND, '2015-05-04 12:00', '2015-05-04 12:01:30');

 

postgresql timestamp subtraction:

相减分钟：SELECT (EXTRACT(epoch FROM NOW())-EXTRACT(epoch FROM CAST('2017-12-06 00:17:10' AS TIMESTAMP)))/60;

相减秒数：SELECT EXTRACT(epoch FROM NOW())-EXTRACT(epoch FROM CAST('2017-12-06 00:17:10' AS TIMESTAMP));