Thread: date array

date array

From
"A. R. Van Hook"
Date:
How do you add null values to a date array?

update dattable set insDate = '{04/12/2006,'null'}    <-- doesn't work
update dattable set insDate= '{04/12/2006,null}'     <-- doesn't work
update dattable set insDate= '{04/12/2006,''}'         <-- doesn't work

the table field is defined as insDate date[]




thanks


-- 
Arthur R. Van Hook     Mayor 
The City of Lake Lotawana

hook@lake-lotawana.mo.us

(816) 578-4704 - Home
(816) 578-4215 - City
(816) 564-0769 - Cell



Re: date array

From
Bruno Wolff III
Date:
On Sun, Apr 23, 2006 at 07:55:54 -0500, "A. R. Van Hook" <hook@lake-lotawana.mo.us> wrote:
> How do you add null values to a date array?
> 
> update dattable set insDate= '{04/12/2006,null}'     <-- doesn't work

That is the correct format. However, I think that only works in HEAD
(what will become 8.2 in about 6 months).


Re: date array

From
Bruno Wolff III
Date:
Please keep responses copied to the list. This both helps other people with
similar questions by getting the discussion in the archives and helps you
by letting other people see your additional questions.

On Sun, Apr 23, 2006 at 13:21:49 -0500, "A. R. Van Hook" <hook@lake-lotawana.mo.us> wrote:
> I am running 8.1.2, what can I do in the mean time?

You could build from source using HEAD. (This is probably not a good idea for
a production system.)
You could restructure your data model to not use arrays. (You probably
shouldn't be using them anyway. Arrays should be used for things that are
naturally arrays (e.g. vectors) and I would be surprised if this was the
case when you are storing dates.)

Also note that 8.1.3 is out and 8.1.4 will probably be out soon, so you
should be looking to upgrade in any case.

> 
> 
> thanks
> 
> Bruno Wolff III wrote:
> 
> >On Sun, Apr 23, 2006 at 07:55:54 -0500,
> > "A. R. Van Hook" <hook@lake-lotawana.mo.us> wrote:
> > 
> >
> >>How do you add null values to a date array?
> >>
> >>update dattable set insDate= '{04/12/2006,null}'     <-- doesn't work
> >>   
> >>
> >
> >That is the correct format. However, I think that only works in HEAD
> >(what will become 8.2 in about 6 months).


Re: date array

From
"A. R. Van Hook"
Date:
While down loading 8.1.3, I tried the following:

update pf_inspectionsBld set insdate[0] = current_date
update pf_inspectionsBld set insdate[1] = current_date
update pf_inspectionsBld set insdate[2] = current_date
update pf_inspectionsBld set insdate[3] = current_date
update pf_inspectionsBld set insdate[4] = current_date + 1
select * from pf_inspectionsBld
A-2   |    1793 | 
[0:4]={04/24/2006,04/24/2006,04/24/2006,04/24/2006,04/25/2006}

yet if I try 
update pr_inspectionsbld set inspdate[3] = null
then
select * from pf_inspectionsBld
A-2   |    1793 | 
[0:4]={04/24/2006,04/24/2006,04/24/2006,04/24/2006,04/25/2006}

i.e. no error and no change

what am I missing??

thanks

Bruno Wolff III wrote:

>Please keep responses copied to the list. This both helps other people with
>similar questions by getting the discussion in the archives and helps you
>by letting other people see your additional questions.
>
>On Sun, Apr 23, 2006 at 13:21:49 -0500,
>  "A. R. Van Hook" <hook@lake-lotawana.mo.us> wrote:
>  
>
>>I am running 8.1.2, what can I do in the mean time?
>>    
>>
>
>You could build from source using HEAD. (This is probably not a good idea for
>a production system.)
>You could restructure your data model to not use arrays. (You probably
>shouldn't be using them anyway. Arrays should be used for things that are
>naturally arrays (e.g. vectors) and I would be surprised if this was the
>case when you are storing dates.)
>
>Also note that 8.1.3 is out and 8.1.4 will probably be out soon, so you
>should be looking to upgrade in any case.
>
>  
>
>>thanks
>>
>>Bruno Wolff III wrote:
>>
>>    
>>
>>>On Sun, Apr 23, 2006 at 07:55:54 -0500,
>>>"A. R. Van Hook" <hook@lake-lotawana.mo.us> wrote:
>>>
>>>
>>>      
>>>
>>>>How do you add null values to a date array?
>>>>
>>>>update dattable set insDate= '{04/12/2006,null}'     <-- doesn't work
>>>>  
>>>>
>>>>        
>>>>
>>>That is the correct format. However, I think that only works in HEAD
>>>(what will become 8.2 in about 6 months).
>>>      
>>>
>
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>


-- 
Arthur R. Van Hook     Mayor 
The City of Lake Lotawana

hook@lake-lotawana.mo.us

(816) 578-4704 - Home
(816) 578-4215 - City
(816) 564-0769 - Cell