# How do you find the difference between two timestamps in seconds?

## How do you find the difference between two timestamps in seconds?

If you’d like to calculate the difference between the timestamps in seconds, multiply the decimal difference in days by the number of seconds in a day, which equals 24 * 60 * 60 = 86400 , or the product of the number of hours in a day, the number of minutes in an hour, and the number of seconds in a minute.

What is TIMESTAMP in Oracle SQL?

The TIMESTAMP datatype is an extension of the DATE datatype. It stores year, month, day, hour, minute, and second values. It also stores fractional seconds, which are not stored by the DATE datatype.

How do you calculate a timestamp from a date?

Convert from human-readable date to epoch long epoch = new java.text.SimpleDateFormat(“MM/dd/yyyy HH:mm:ss”).parse(“01/01/1970 01:00:00″).getTime() / 1000; Timestamp in seconds, remove ‘/1000’ for milliseconds. date +%s -d”Jan 1, 1980 00:00:01” Replace ‘-d’ with ‘-ud’ to input in GMT/UTC time.

### Can we compare timestamp?

Answer. The SQL99 (SQL3) Standard states that the DATE, TIME, and TIMESTAMP data types are not compatible for either assignment or comparison.

What is the timestamp format in Oracle?

Oracle TIMESTAMP literals To specify TIMESTAMP literals, you use the following format: TIMESTAMP ‘YYYY-MM-DD HH24:MI:SS.FF’ The following example illustrates a TIMESTAMP literal: TIMESTAMP ‘1999-12-31 23:59:59.10’

How to get the total milliseconds of a timestamp?

Expanding RenĂ©’s answer a bit, if you want the total milliseconds then you need to extract and combine all of the elements from the interval that’s produced by subtracting one timestamp from another:

## How to calculate the difference between the timestamps in Oracle?

To calculate the difference between the timestamps in Oracle, simply subtract the start timestamp from the end timestamp (here: arrival – departure ). The resulting column will be in INTERVAL DAY TO SECOND.

How to get the total number of milliseconds in an interval?

Show activity on this post. Expanding RenĂ©’s answer a bit, if you want the total milliseconds then you need to extract and combine all of the elements from the interval that’s produced by subtracting one timestamp from another: