[b] 1、bigint类型转换为datetime类型[/b]
1341307034122是Java 里的日期毫秒数,自1970-01-01 00:00:00以来的毫秒数
mysql>select from_unixtime(1341307034122/1000);
output:2012-07-03 17:17:14
[b] 2、datetime类型转换为bigint类型[/b]
2012-07-03 17:17:14是时间字符串,转换为毫秒数
mysql>select UNIX_TIMESTAMP('2012-07-03 17:17:14');
output:1341307034*1000
1341307034122是Java 里的日期毫秒数,自1970-01-01 00:00:00以来的毫秒数
mysql>select from_unixtime(1341307034122/1000);
output:2012-07-03 17:17:14
[b] 2、datetime类型转换为bigint类型[/b]
2012-07-03 17:17:14是时间字符串,转换为毫秒数
mysql>select UNIX_TIMESTAMP('2012-07-03 17:17:14');
output:1341307034*1000