1、yyyy-mm-dd hh:mm:ss转为yyyy-mm-dd
Select convert(char(10),getdate(),126) ;
2019-03-12 00:00:00.000 转为 2019-03-12
https://bbs.csdn.net/topics/40089843
2、yyyy-mm-dd hh:mm:ss.SSS转为yyyy-mm-dd hh:mm:ss
Select convert(char(19),START_TIME_,120);
2019-04-25 13:42:35.123 转为 2019-04-25 13:42:35
3、yyyy-mm-dd hh:mm:ss.SSS转为Date(java转换)
String referenceDate;
Date date;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
if(querydate.toLowerCase().equals("firstquery")) {
date=new Date();
referenceDate=sdf.format(date);
}
else {
date = sdf.parse(querydate);
referenceDate=querydate;
}