DATETIME

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Hi All,



I have a DB that is storing the date/time an event happens in DATETIME form=
at, i.e. 1254252889, which translates to Tue, 29 Sep 2009 19:34:49 UTC



I am trying to write a query in PHP that will look for any row that falls w=
ithin a range of dates, i.e. between Sep 1 and Oct 1, but there doesn't see=
m to be a way to search, since you would never be able to specify a match b=
etween what date range you put in, and the time stamps??



I created a form that allows them to select a date, but even converting a d=
ate string to a timestamp, you'll never be able to get a match in the db...=
?



Any thoughts appreciated,



Edward






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Re: DATETIME

--000e0cd5c6da738ebf047571f98a
Content-Type: text/plain; charset=ISO-8859-1

>
> Hi All,
>
>
>
> I have a DB that is storing the date/time an event happens in DATETIME
> format, i.e. 1254252889, which translates to Tue, 29 Sep 2009 19:34:49 UTC
>
>
>
> I am trying to write a query in PHP that will look for any row that falls
> within a range of dates, i.e. between Sep 1 and Oct 1, but there doesn't
> seem to be a way to search, since you would never be able to specify a match
> between what date range you put in, and the time stamps??
>
>
>
> I created a form that allows them to select a date, but even converting a
> date string to a timestamp, you'll never be able to get a match in the
> db...?
>
>
>
> Any thoughts appreciated,
>
>
>
> Edward


I'm not sure I'm following you.

1) What database are you using? MSSQL/Informix/MySQL?

2) The data type for your event date/time column is just DATETIME? Or is it
DATETIME YEAR TO FRACTION or anything like that?

3) Wouldn't your query be written in SQL and just executed from PHP?

If you are using DATETIME YEAR TO FRACTION your query should look something
like:

"SELECT * FROM my_table WHERE event_date BETWEEN ('2009-09-01 00:00:00.000'
AND '2009-10-01 23:59:59.999')"

--000e0cd5c6da738ebf047571f98a--

Re: DATETIME

Go look at dev.mysql.com and search for DATETIME. There are plenty of
examples of how to do comparison searching using the UNIX datestamps.

Dan Shirah wrote:
>> Hi All,
>>
>>
>>
>> I have a DB that is storing the date/time an event happens in DATETIME
>> format, i.e. 1254252889, which translates to Tue, 29 Sep 2009 19:34:49 UTC
>>
>>
>>
>> I am trying to write a query in PHP that will look for any row that falls
>> within a range of dates, i.e. between Sep 1 and Oct 1, but there doesn't
>> seem to be a way to search, since you would never be able to specify a match
>> between what date range you put in, and the time stamps??
>>
>>
>>
>> I created a form that allows them to select a date, but even converting a
>> date string to a timestamp, you'll never be able to get a match in the
>> db...?
>>
>>
>>
>> Any thoughts appreciated,
>>
>>
>>
>> Edward
>>
>
>
> I'm not sure I'm following you.
>
> 1) What database are you using? MSSQL/Informix/MySQL?
>
> 2) The data type for your event date/time column is just DATETIME? Or is it
> DATETIME YEAR TO FRACTION or anything like that?
>
> 3) Wouldn't your query be written in SQL and just executed from PHP?
>
> If you are using DATETIME YEAR TO FRACTION your query should look something
> like:
>
> "SELECT * FROM my_table WHERE event_date BETWEEN ('2009-09-01 00:00:00.000'
> AND '2009-10-01 23:59:59.999')"
>
>


--
Jason Gerfen
Systems Administration/Web application development
jason.gerfen@scl.utah.edu

Marriott Library
Lab Systems PC
295 South 1500 East
Salt Lake City, Utah 84112-0806
Ext 5-9810


--
PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Re: DATETIME

Sorry I should have included a simple example:

SELECT (`field_01`, `field_02`) FROM `table` WHERE DATETIME('2009-09-01
00:00:00.000') < DATETIME('2009-10-01 23:59:59.999');

Dan Shirah wrote:
>> Hi All,
>>
>>
>>
>> I have a DB that is storing the date/time an event happens in DATETIME
>> format, i.e. 1254252889, which translates to Tue, 29 Sep 2009 19:34:49 UTC
>>
>>
>>
>> I am trying to write a query in PHP that will look for any row that falls
>> within a range of dates, i.e. between Sep 1 and Oct 1, but there doesn't
>> seem to be a way to search, since you would never be able to specify a match
>> between what date range you put in, and the time stamps??
>>
>>
>>
>> I created a form that allows them to select a date, but even converting a
>> date string to a timestamp, you'll never be able to get a match in the
>> db...?
>>
>>
>>
>> Any thoughts appreciated,
>>
>>
>>
>> Edward
>>
>
>
> I'm not sure I'm following you.
>
> 1) What database are you using? MSSQL/Informix/MySQL?
>
> 2) The data type for your event date/time column is just DATETIME? Or is it
> DATETIME YEAR TO FRACTION or anything like that?
>
> 3) Wouldn't your query be written in SQL and just executed from PHP?
>
> If you are using DATETIME YEAR TO FRACTION your query should look something
> like:
>
> "SELECT * FROM my_table WHERE event_date BETWEEN ('2009-09-01 00:00:00.000'
> AND '2009-10-01 23:59:59.999')"
>
>


--
Jason Gerfen
Systems Administration/Web application development
jason.gerfen@scl.utah.edu

Marriott Library
Lab Systems PC
295 South 1500 East
Salt Lake City, Utah 84112-0806
Ext 5-9810


--
PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

RE: DATETIME

Thanks all - yes this is mysql, but not a mysql DATETIME field per se, but =
the issue was that I was trying to do like or equal to query the date range=
, and doing that will never match since whats in the db is YYYYMMDDHHMMSSSS=
(in timestamp format) and yet the query I would be able to send would neve=
r match anything exactly, so as Jason suggested, using 'BETWEEN' was the ke=
y But as a BETWEEN it's not a matter of matching, it's a matter of falling =
in a range.

I.e. Your timestamp is 150

Sep 01 is 100
Oct 01 is 200

150 passes the between 100 and 200 check.

So the granularity should not be an issue.

Thanks all

Edward


-----Original Message-----
From: Jason Gerfen [mailto:jason.gerfen@scl.utah.edu]
Sent: Thursday, October 08, 2009 4:09 PM
Cc: php-db@lists.php.net
Subject: Re: [PHP-DB] DATETIME

Go look at dev.mysql.com and search for DATETIME. There are plenty of
examples of how to do comparison searching using the UNIX datestamps.

Dan Shirah wrote:
>> Hi All,
>>
>>
>>
>> I have a DB that is storing the date/time an event happens in DATETIME
>> format, i.e. 1254252889, which translates to Tue, 29 Sep 2009 19:34:49 U=
TC
>>
>>
>>
>> I am trying to write a query in PHP that will look for any row that fall=
s
>> within a range of dates, i.e. between Sep 1 and Oct 1, but there doesn't
>> seem to be a way to search, since you would never be able to specify a m=
atch
>> between what date range you put in, and the time stamps??
>>
>>
>>
>> I created a form that allows them to select a date, but even converting =
a
>> date string to a timestamp, you'll never be able to get a match in the
>> db...?
>>
>>
>>
>> Any thoughts appreciated,
>>
>>
>>
>> Edward
>>
>
>
> I'm not sure I'm following you.
>
> 1) What database are you using? MSSQL/Informix/MySQL?
>
> 2) The data type for your event date/time column is just DATETIME? Or is=
it
> DATETIME YEAR TO FRACTION or anything like that?
>
> 3) Wouldn't your query be written in SQL and just executed from PHP?
>
> If you are using DATETIME YEAR TO FRACTION your query should look somethi=
ng
> like:
>
> "SELECT * FROM my_table WHERE event_date BETWEEN ('2009-09-01 00:00:00.00=
0'
> AND '2009-10-01 23:59:59.999')"
>
>


--
Jason Gerfen
Systems Administration/Web application development
jason.gerfen@scl.utah.edu

Marriott Library
Lab Systems PC
295 South 1500 East
Salt Lake City, Utah 84112-0806
Ext 5-9810


--
PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php





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