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JDBC and Relational Databases
mysql - get time interval
Joined: Nov 28, 2004
Nov 28, 2004 14:27:00
hello - this is probably pretty simple, but i was wondering if anyone had seen any examples of how to select something from a database based on a time interval.
for example, i have a number of records in a database, and I want to be able to pull all the ones out that have been created, say, less than one hour from the present time.
what is the best time/date format to stamp these things and what are the comparison methods like?
Joined: Feb 02, 2002
Nov 28, 2004 19:41:00
Hi Ian, welcome to JavaRanch.
This depends on the database you are using, and whether it supports arithmatic operators on date/time values, or has special methods to use with data/time.
In Oracle, you can just subtract two Dates, and it gives you the number of days(or the fraction of a day) between the two, which you can use in specifying your conditions.
The best place to start is the documentation for the database you are using.
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