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Re: Storing dates [message #186250 is a reply to message #186249]

Sat, 21 June 2014 21:09

Jerry Stuckle
Messages: 2598
Registered: September 2010

Karma:

Senior Member

On 6/21/2014 5:06 PM, Tim Streater wrote:
> In article <XnsA353998B95688dougmilmaccom(at)78(dot)46(dot)70(dot)116>, Doug Miller
> <doug_at_milmac_dot_com(at)example(dot)com> wrote:
>
>> richard <noreply(at)example(dot)com> wrote in
>> news:hzk4wa449wa$(dot)3xtj0jkxz78o$(dot)dlg(at)40tude(dot)net:
>>> On Sat, 21 Jun 2014 17:42:29 +0000 (UTC), Doug Miller wrote:
>>>> > richard <noreply(at)example(dot)com> wrote in
>>>> news:1mddkhwt2mr0v$.1m6eithcu7iod.dlg@ 40tude.net:
>>>> >>> As for the date usage on MY database tables, I am only using a
>>>> > date as a reference.
>>>> >> Patently false, as you have posted questions here asking for
>>>> help resolving your problems in sorting by the date.
>>>> >>> I really don't give a damn what your philosophy or ideals are
>>>> > behind the so called "proper ways" of obtaining a date.
>>>> >> Which is exactly *why* you have problems sorting by the date.
>>>> The problem with sorting is, it treats any value given as a
>>> string, then determines which has the lowest value in total.
>>
>> Yes, I understand that. That results directly from storing dates as
>> strings,
>> and is exactly the reason that everyone here has been telling you to
>> store your dates in a
>> column that has
>> the DATE datatype, not CHAR.
>> Your refusal to follow that advice -- apparently stemming from your
>> inability
>> to understand that there even *are* datatypes other than NUMERIC and
>> CHAR -- is the entire reason you are having this sorting problem.
>
> I have a field which contains values like 3.7, 4.2, etc. But when I
> defined the field (in SQLite) I made it a TEXT field, forgetting that I
> would need to be able to sort on that field.
>
> My workaround is to convert the string to floating at the time of the
> sort. In SQLite I do:
>
> ... ORDER BY ROUND(myfield,1);
>
> which works just fine. Richard should look for something similar in
> mysql.
>

Why don't you fix your database?

The way you're doing it cannot use an index and will call round() for
EVERY row in the sort.

--
==================
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Jerry Stuckle
jstucklex(at)attglobal(dot)net
==================

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[Message index]

		Putting it all together By: Mr Oldies on Fri, 20 June 2014 14:20
		Re: Putting it all together By: Evan Platt on Fri, 20 June 2014 15:11
		Re: Putting it all together By: Mr Oldies on Fri, 20 June 2014 15:24
		Re: Putting it all together By: Doug Miller on Fri, 20 June 2014 17:15
		Re: Putting it all together By: Evan Platt on Sat, 21 June 2014 03:01
		Re: Putting it all together By: Jrgen Exner on Fri, 20 June 2014 15:21
		Re: Putting it all together By: Norman Peelman on Sat, 21 June 2014 01:06
		Re: Putting it all together By: Denis McMahon on Sat, 21 June 2014 03:02
		Re: Putting it all together By: Denis McMahon on Sat, 21 June 2014 03:09
		Re: Putting it all together By: Jrgen Exner on Sat, 21 June 2014 03:13
		Re: Putting it all together By: Mr Oldies on Sat, 21 June 2014 03:34
		Re: Putting it all together By: Jrgen Exner on Sat, 21 June 2014 03:48
		Re: Putting it all together By: Evan Platt on Sat, 21 June 2014 04:00
		Re: Putting it all together By: Doug Miller on Sat, 21 June 2014 04:22
		Re: Putting it all together By: Jrgen Exner on Sat, 21 June 2014 05:11
		Re: Putting it all together By: Evan Platt on Sat, 21 June 2014 05:39
		Re: Putting it all together By: gordonb.zp2md on Sat, 21 June 2014 09:15
		Storing dates (was: Putting it all together) By: Thomas 'PointedEars' on Sat, 21 June 2014 10:15
		Re: Storing dates By: Mr Oldies on Sat, 21 June 2014 15:10
		Re: Storing dates By: Doug Miller on Sat, 21 June 2014 17:42
		Re: Storing dates By: Mr Oldies on Sat, 21 June 2014 18:28
		Re: Storing dates By: Jrgen Exner on Sat, 21 June 2014 19:04
		Re: Storing dates By: Doug Miller on Sat, 21 June 2014 19:06
		Re: Storing dates By: Tim Streater on Sat, 21 June 2014 21:06
		Re: Storing dates By: Jerry Stuckle on Sat, 21 June 2014 21:09
		Re: Storing dates By: Tim Streater on Sat, 21 June 2014 21:33
		Re: Storing dates By: Jerry Stuckle on Sat, 21 June 2014 21:49
		Re: Storing dates By: Thomas 'PointedEars' on Sun, 22 June 2014 12:38
		Re: Storing dates By: Jrgen Exner on Sat, 21 June 2014 21:31
		Re: Storing dates By: Tim Streater on Sat, 21 June 2014 21:44
		Re: Storing dates By: Thomas 'PointedEars' on Sun, 22 June 2014 12:59
		Re: Storing dates By: Denis McMahon on Sat, 21 June 2014 23:19
		Re: Storing dates By: Arno Welzel on Sun, 22 June 2014 06:53
		Re: Storing dates By: Erick T. Barkhuis on Sun, 22 June 2014 08:03
		Re: Storing dates By: Jerry Stuckle on Sun, 22 June 2014 13:29
		Re: Storing dates By: Erick T. Barkhuis on Sun, 22 June 2014 14:24
		Re: Storing dates By: Jerry Stuckle on Sun, 22 June 2014 14:32
		Re: Storing dates By: Erick T. Barkhuis on Sun, 22 June 2014 14:45
		Re: Storing dates By: Denis McMahon on Sun, 22 June 2014 19:44
		Re: Storing dates By: Jrgen Exner on Sun, 22 June 2014 15:26
		Re: Storing dates By: gordonb.q26od on Sun, 22 June 2014 15:00
		Re: Storing dates By: Arno Welzel on Sun, 22 June 2014 14:47
		Re: Storing dates By: Mr Oldies on Sun, 22 June 2014 17:55
		Re: Storing dates By: Jrgen Exner on Sun, 22 June 2014 19:31
		Re: Storing dates By: Thomas 'PointedEars' on Tue, 24 June 2014 20:27
		Re: Storing dates By: Denis McMahon on Sun, 22 June 2014 19:52
		Re: Storing dates By: Arno Welzel on Sun, 22 June 2014 19:52
		Re: Storing dates By: Mr Oldies on Sun, 22 June 2014 18:05
		Re: Storing dates By: Arno Welzel on Sun, 22 June 2014 19:56
		Re: Storing dates By: Mr Oldies on Mon, 23 June 2014 02:46
		Re: Storing dates By: Arno Welzel on Mon, 23 June 2014 06:11
		Re: Storing dates By: Mr Oldies on Mon, 23 June 2014 06:37
		Re: Storing dates By: Arno Welzel on Mon, 23 June 2014 09:10
		Re: Storing dates By: Evan Platt on Mon, 23 June 2014 13:50
		Re: Storing dates By: Mr Oldies on Mon, 23 June 2014 15:13
		Re: Storing dates By: Evan Platt on Mon, 23 June 2014 16:13
		Re: Storing dates By: Arno Welzel on Mon, 23 June 2014 20:33
		Re: Storing dates By: Mr Oldies on Mon, 23 June 2014 03:04
		Re: Storing dates By: Arno Welzel on Mon, 23 June 2014 06:12
		Re: Storing dates By: Geoff Muldoon on Mon, 23 June 2014 06:45
		Re: Storing dates By: Mr Oldies on Mon, 23 June 2014 11:58
		Re: Storing dates By: Jrgen Exner on Mon, 23 June 2014 16:50
		Re: Storing dates By: Christoph Michael Bec on Mon, 23 June 2014 17:02
		Re: Storing dates By: Geoff Muldoon on Tue, 24 June 2014 02:00
		Re: Storing dates By: Thomas 'PointedEars' on Tue, 24 June 2014 20:38
		Re: Storing dates By: Jrgen Exner on Sun, 22 June 2014 22:30
		Re: Storing dates By: Peter H. Coffin on Mon, 23 June 2014 01:10
		Re: Putting it all together By: Jrgen Exner on Sat, 21 June 2014 10:34
		Re: Putting it all together By: Denis McMahon on Sat, 21 June 2014 10:23
		Re: Putting it all together By: bill on Sat, 21 June 2014 11:03
		Re: Putting it all together By: Denis McMahon on Sat, 21 June 2014 15:11
		Re: Putting it all together By: Peter H. Coffin on Sat, 21 June 2014 15:57
		Re: Putting it all together By: Arno Welzel on Sun, 22 June 2014 06:45

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