On 3/22/12 1:59 PM, Francesc Alted wrote:
On 3/22/12 12:48 PM, sreeaurovindh viswanathan wrote:
But.. Can i get sort one column by descending and the other ascending.
say
if i have two columns and first i would like to sort the one in
ascending and then sort the second column based on the search
On 3/22/12 12:48 PM, sreeaurovindh viswanathan wrote:
> But.. Can i get sort one column by descending and the other ascending.
> say
> if i have two columns and first i would like to sort the one in
> ascending and then sort the second column based on the search from the
> first.
>
>
> I mean I i h
But.. Can i get sort one column by descending and the other ascending.
say
if i have two columns and first i would like to sort the one in
ascending and then sort the second column based on the search from the
first.
I mean I i have
1 5
2 6
1 8
2 9
Could i get an output as
1 5
1 8
2 6
2 9
Sor
I completely forgot about the CSI index. That's of course much easier than
what I suggested ;-)
Am 22.03.2012 17:39 schrieb "Francesc Alted" :
> On 3/22/12 11:02 AM, sreeaurovindh viswanathan wrote:
> > Hi,
> >
> > If I have three columns in a table and if i wish to sort based on one
> > field and
Thanks Francesc Alted for your advice.
Regards
Sree aurovindh V
On Thu, Mar 22, 2012 at 10:09 PM, Francesc Alted wrote:
> On 3/22/12 11:02 AM, sreeaurovindh viswanathan wrote:
>> Hi,
>>
>> If I have three columns in a table and if i wish to sort based on one
>> field and then on the other what w
On 3/22/12 11:02 AM, sreeaurovindh viswanathan wrote:
> Hi,
>
> If I have three columns in a table and if i wish to sort based on one
> field and then on the other what would be the recommended method.I
> would be sorting atleast 75,00,000 records at a time.
>
> ie I would like to use something equ
AFAIK there is no sort functionality built into PyTables.
I think there are 4 ways to do it:
1.) load all 7.5 million records and sort it in memory (if it fits
into the memory)
2.) implement your own external sorting algorithm
(http://en.wikipedia.org/wiki/External_sorting) using pytables
iterato
