Re: Sort question - Fractions, Metric etc

From: Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
To: Bret Stern <bret_stern(at)machinemanagement(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: Sort question - Fractions, Metric etc
Date: 2021-08-14 16:46:30
Message-ID: 0310c35b-10b1-83a2-4efc-7e569a634001@aklaver.com
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On 8/14/21 9:37 AM, Bret Stern wrote:
> Strings;
>
> I haven't explored doing this with numeric types, but some columns
> needed alpha chars eg 13mm.

Two columns:

data_val(numeric) data_unit(varchar)
13 mm

>
> Although I could have front ended this UI with mm nomenclature I did not.
>
> I'll put a table together with appropriate numeric types and see if the
> sort will behave.

It will.

>
>
>
> On 8/14/2021 9:21 AM, Adrian Klaver wrote:
>> On 8/14/21 9:14 AM, Bret Stern wrote:
>>> I have a table with metric, imperial, fraction columns.
>>>
>>> Is there a way to sort correctly using imperial (eg; .125, .375, .437
>>> -> 1., 1.125)
>>
>> Alright how is this different from metric or fraction?
>>
>> I can sort of see fraction if you mean as 1/3, 1/20, etc.
>>
>> What is the data type of the field you are storing this in?
>>
>>>
>>> Couldn't handle it with ORDER BY ASC, DESC args so I added a
>>> sort_column and sorted based
>>>
>>> on those values eg; 1,2,3,4,5,6 indicating the value I need to show
>>> in which sequence.
>>>
>>>
>>> Just curious what the pro's do
>>>
>>> Bret
>>>
>>>
>>>
>>
>>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com

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