Adding hours, minutes, seconds to SQL Date

Question

Good Day!

I have a problem with SQL Dates. I think the main problem is on the perspective of time. In my program, I have a start and end date, say for example

Answer 1

As mentioned that the date stored as 2013-01-10 00:00:00 is to be converted to 2013-01-10 23:59:59.999 and then take that as end date.

MySql

DATE_ADD()

When you query your date time field, you can advance your endtime by one day as follows

DATE_ADD('your_datetime_field', INTERVAL 1 DAY)

OR

Java code

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// rs is ResultSet reference
long dt = rs.getTimestamp("your_datetime_field").getTime();
// pick calendar instance and set time
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(dt);
// this will print `2013-01-10 00:00:00`
System.out.println(sdf.format(calendar.getTime()));
// advance the date by 1 day
calendar.add(Calendar.Date, 1);
// this is print `2013-01-11 00:00:00`
System.out.println(sdf.format(calendar.getTime()));

Now, you can compare with this Calendar object as well.

Hope this helps.