Solved

MYSQL: How to query yyyy-mm-dd hh:mm:ss MINUS 4 hours ago?

Posted on 2008-06-26
2
1,122 Views
Last Modified: 2013-12-12
MYSQL


Hello,

I have a field in my mysql table in this format: yyyy-mm-dd hh:mm:ss

How do I retrieve rows that are "current time MINUS 4 hours"? That is, I want to retrieve anything with a timestamp that is less than 4 hours ago.

How do I write this mysql query?

Thanks.
0
Comment
Question by:gingera
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 8

Accepted Solution

by:
CoyotesIT earned 500 total points
ID: 21875804
try something like:

SELECT <your_date_time_field> FROM <your_table> WHERE <your_date_time_field> >= DATE_SUB(NOW(), INTERVAL 4 HOUR);

I don't have any data to test that on, but I think that should get you pointed in the right direction.

~CoyotesIT
0
 

Author Closing Comment

by:gingera
ID: 31471000
THANKS!
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Creating and Managing Databases with phpMyAdmin in cPanel.
When table data gets too large to manage or queries take too long to execute the solution is often to buy bigger hardware or assign more CPUs and memory resources to the machine to solve the problem. However, the best, cheapest and most effective so…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question