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Hive >> mail # user >> Something wrong with my query to get TOP 3?


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Re: Something wrong with my query to get TOP 3?
Sorry, just pid needs to be dropped from both DISTRIBUTE and SORT clauses.
Your very first query was correct except for the nested subquery part. (You
don't need a double-nested subquery.)

On Thu, Jul 19, 2012 at 3:48 PM, comptech geeky <[EMAIL PROTECTED]>wrote:

> Hi Igor,
>
> I am not sure what I have to remove from Distribute By as in distribute by
> we have bid, pid and you said remove bid and time from distribute by and it
> doesn't have time
>
> *SELECT bid, pid, rank FROM *
>       *(SELECT bid, pid, rank(bid) rank, time, UNIX_TIMESTAMP(time)  FROM
> *
>   *
>            ( SELECT bid, pid, time FROM table1*
> * where to_date(from_unixtime(cast(UNIX_TIMESTAMP(time) as int))) > '2012-07-09' *
> *            DISTRIBUTE BY bid,pid*
> *            SORT BY bid,pid, time desc) A
> *
> *
>       ) B
> *
> *WHERE rank < 3;*
>
>
> And also I tried running the above query as it is. I am not getting
> expected output instead of that I am getting output like this which is
> wrong If you compare my expected output with the below output-
>
> *1345653 110909316904    0*
> *1345653 221065796761    1*
> *1345653 330760137950    2*
>
>
> On Thu, Jul 19, 2012 at 3:43 PM, Igor Tatarinov <[EMAIL PROTECTED]> wrote:
>
>> Remove pid,time from DISTRIBUTE BY.
>>
>> On Thu, Jul 19, 2012 at 1:45 PM, comptech geeky <[EMAIL PROTECTED]>wrote:
>>
>>> Modified Query that I wrote and its not working as expected output is.
>>>
>>> *
>>> *
>>> *SELECT bid, pid, rank(bid), time, UNIX_TIMESTAMP(time)*
>>> *FROM (*
>>> *    SELECT bid, pid, time*
>>> *    FROM table1*
>>> * where to_date(from_unixtime(cast(UNIX_TIMESTAMP(time) as int))) >>> '2012-07-09'*
>>> *    DISTRIBUTE BY bid,pid,time*
>>> *    SORT BY bid, time desc*
>>> *) a*
>>> *WHERE rank(bid) < 3;*
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Jul 19, 2012 at 1:41 PM, comptech geeky <[EMAIL PROTECTED]
>>> > wrote:
>>>
>>>> I wrote this query after modifying it-
>>>>
>>>> *SELECT buyer_id, item_id, rank(buyer_id), created_time,
>>>> UNIX_TIMESTAMP(created_time)*
>>>> *FROM (*
>>>> *    SELECT buyer_id, item_id, created_time*
>>>> *    FROM testingtable1*
>>>> * where to_date(from_unixtime(cast(UNIX_TIMESTAMP(created_time) as
>>>> int))) = '2012-07-09'*
>>>> *    DISTRIBUTE BY buyer_id,item_id*
>>>> *    SORT BY buyer_id, created_time desc*
>>>> *) a*
>>>> *WHERE rank(buyer_id) < 3;*
>>>>
>>>> And the output I got is which is sligtly wrong as it is missing two
>>>> rows-
>>>>
>>>> *1345653    330760137950       2012-07-09 21:43:29*
>>>> *1345653    330760137950       2012-07-09 21:42:29*
>>>> *1345653    330760137950       2012-07-09 21:41:29*
>>>>
>>>> These two rows are missing-
>>>>
>>>> 1345653    110909316904       2012-07-09 21:29:06
>>>> 1345653    221065796761       2012-07-09 19:31:48
>>>>
>>>>  So full output should be like this-
>>>>
>>>> *1345653    330760137950       2012-07-09 21:43:29*
>>>> *1345653    330760137950       2012-07-09 21:42:29*
>>>> *1345653    330760137950       2012-07-09 21:41:29*
>>>> 1345653    110909316904       2012-07-09 21:29:06
>>>> 1345653    221065796761       2012-07-09 19:31:48
>>>>
>>>>
>>>> On Thu, Jul 19, 2012 at 1:29 PM, comptech geeky <
>>>> [EMAIL PROTECTED]> wrote:
>>>>
>>>>> Can you show me the exact query that I need to do for this particular
>>>>> problem consideing my scenario? It will be of great help to me. As I am new
>>>>> to HiveQL.
>>>>>
>>>>> I need TOP 3 for those if BID and PID gets matched but with different
>>>>> timestamp.
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Jul 19, 2012 at 1:15 PM, Philip Tromans <
>>>>> [EMAIL PROTECTED]> wrote:
>>>>>
>>>>>> Your rank() is being evaluated map side. Put your distribute by and
>>>>>> sort by in an inner query, and then evaluate your rank() in an outer query.
>>>>>>
>>>>>> Phil.
>>>>>> On Jul 19, 2012 9:00 PM, "comptech geeky" <[EMAIL PROTECTED]>
>>>>>> wrote:
>>>>>>
>>>>>>> This is the below data in my Table1
>>>>>>>
>>>>>>>
>>>>>>> BID       PID                       TIME
>>>>>>>
>