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Pull dated data from database stored in epoch

Posted on 2013-11-07
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Last Modified: 2013-11-08
I have a database that stores information on tasks.  There is a d_completed field that saves the date a task was completed in epoch.

I would like to query the database for date ranges.  For example, pull all tasks down between 11-02-2013 and 11-07-2013.

Can someone help me with the syntax?
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Question by:savone
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9 Comments
 
LVL 5

Expert Comment

by:dannygonzalez09
ID: 39632069
this should get you the output

SELECT * FROM MyTable
WHERE d_completed BETWEEN UNIX_TIMESTAMP('11-02-2013') AND UNIX_TIMESTAMP('11-07-2013')
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LVL 23

Author Comment

by:savone
ID: 39632163
select * from 2do_list where d_completed between UNIX_TIMESTAMP('11-02-2013') AND UNIX_TIMESTAMP('11-07-2013');
Empty set, 2 warnings (0.00 sec)
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Expert Comment

by:dannygonzalez09
ID: 39632186
What warnings are you getting ?
 can you post some sample epoch times from your table
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LVL 23

Author Comment

by:savone
ID: 39632213
It didn't say which warnings, I post the output as I saw it.

Here is an example of the epoch time:
1383863910
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Expert Comment

by:dannygonzalez09
ID: 39632229
I don't see any problems with the date functions..try this

i'm converting the epoch value and then datetime to the epoch time

SELECT FROM_UNIXTIME(1383863910), UNIX_TIMESTAMP('2013-11-07 22:38:30')

ah it might be the format try

select * from 2do_list where d_completed between UNIX_TIMESTAMP('2013-11-02') AND UNIX_TIMESTAMP('2013-11-07');
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LVL 23

Author Comment

by:savone
ID: 39632238
select * from 2do_list where d_completed between UNIX_TIMESTAMP('2013-11-02') AND UNIX_TIMESTAMP('2013-11-07');
Empty set (0.00 sec)

I only have 3 entries in the database and they are all from today, so I would assume it should return 3 rows, correct?
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Accepted Solution

by:
dannygonzalez09 earned 500 total points
ID: 39632241
its basically getting all the data from 2nd midnight upto 7th midnight

change the date to '2013-11-08'
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LVL 110

Expert Comment

by:Ray Paseur
ID: 39633257
Make a quick search of EE articles for "Beware of Between" (or similar) to see the risks inherent in the way MySQL handles the BETWEEN clause when using DATETIME columns.

This article shows some of the ways to handle DATETIME information in PHP and SQL.
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/A_201-Handling-date-and-time-in-PHP-and-MySQL.html
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Author Closing Comment

by:savone
ID: 39633434
Thanks for the help!
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