MySQL maximum date before a given date

Posted on 2013-01-03
Medium Priority
Last Modified: 2014-12-20
I have a table that has a series of dates along with an ID:
A             3/6/1987 12:00:00 AM
A            4/1/1988 12:00:00 AM
A            4/28/1989 12:00:00 AM
B            3/6/1987 12:00:00 AM
B           4/1/1988 12:00:00 AM

I would like to find the maximum A that is before say 04/27/1988.
This does not work, and I cant figure out why:

Select max(My_date) from Mytable
where MY_ID = 'A'
and My_date < str_to_date('04/27/1988')
group by MY_ID

it always just gives me the max() record
Question by:GNOVAK
  • 2
LVL 41

Expert Comment

ID: 38742339
I did not see any issue. What is the date are you getting with your query?

Author Comment

ID: 38744260
I'm trying to get the second record as presented above:
A            4/1/1988 12:00:00 AM
and I keep getting :
A            4/28/1989 12:00:00 AM

almost like the Max() takes precedence

Accepted Solution

GNOVAK earned 0 total points
ID: 38752790
If I do the following, I get the right date:

Select max(My_date) from Mytable
where MY_ID = 'A'
and My_date < '1988-27-04')

However if my data looks like this:
MY_ID    MY_DATE                             PRICE
A             3/6/1987 12:00:00 AM       1
A            4/1/1988 12:00:00 AM         2
A            4/28/1989 12:00:00 AM       3
B            3/6/1987 12:00:00 AM         5
B           4/1/1988 12:00:00 AM          6

and I query  using:
Select max(My_date), PRICE from Mytable
where MY_ID = 'A'
and My_date < '1988-27-04')

I get the right date (4/1/88) but get the first price (1)
How do I query to get the price corresponding to the date retrieved?

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

This article shows the steps required to install WordPress on Azure. Web Apps, Mobile Apps, API Apps, or Functions, in Azure all these run in an App Service plan. WordPress is no exception and requires an App Service Plan and Database to install
Article by: Tammy
MySQLTuner is a script written in Perl that allows you to review a MySQL installation quickly and make adjustments to increase performance and stability. The current configuration variables and status data is retrieved and presented in a brief forma…
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…

600 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