如何从 MySQL DATETIME 实例获取总秒数？
MySQL DateTime 实例可以通过 UNIX_TIMESTAMP() 函数按以下方式转换为秒 -
mysql> Select UNIX_TIMESTAMP('2017-05-15 04:05:30') AS 'NUMBER OF SECONDS'; +-------------------+ | NUMBER OF SECONDS | +-------------------+ | 1494801330 | +-------------------+ 1 row in set (0.00 sec)登录后复制
mysql> Select UNIX_TIMESTAMP(NOW()) AS 'NUMBER OF SECONDS'; +-------------------+ | NUMBER OF SECONDS | +-------------------+ | 1509248856 | +-------------------+ 1 row in set (0.00 sec)登录后复制
mysql> Select UNIX_TIMESTAMP(Dateofreg) AS 'NUMBER OF SECONDS' from testing where StudentName = 'Gaurav'; +-------------------+ | NUMBER OF SECONDS | +-------------------+ | 1509247113 | +-------------------+ 1 row in set (0.00 sec)登录后复制
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