Yes indeed. Thank you for prompting me to post again.
It is always helpful to get a response, any response.
There is nothing worse than posting and getting absolutely
nothing in reply.
As you say I have now got quite a few suggestions and even if they
don't all pan out I will have learnt a lot.
Hi Hive Team,
I have Teradata Query as below and my intention is to convert in to Hive
Query(HQL). Tried but it's vain.
SELECT Col_1, Col_2, Col_3, MIN(Col_3) OVER(Partition by Col_1 ORDER BY Col_3,
Col_2 rows between 1 preceding and 1 preceding) prev_Col_3 FROM work_table ;
Example:
Actual
Hi,
I feel sure that someone has asked for this before, but here goes...
In the case where I have the query
SELECT COUNT(*) FROM table;
There are many cases where I can determine the count immediately.
(For example if I have run something like:
ANALYZE TABLE tablename
Hi all,
Here is the scenario, suppose I have 2 tables A and B, I would like to
perform a simple join on them,
We can do it like this:
INSERT OVERWRITE TABLE C
SELECT FROM A JOIN B on A.id=B.id
In order to speed up this query since table A and B have lots of data,
another approach is :
what version of hive are you running? and show us your attempts - don't be
shy!
On Fri, Jun 28, 2013 at 5:52 AM, Kumar Chinnakali
kumar_chinnak...@infosys.com wrote:
Hi Hive Team,
** **
I have Teradata Query as below and my intention is to convert in to Hive
Query(HQL). Tried but
To emulate the RANK function you will need a custom UDF
Edward Capriolo has a nice one here
https://github.com/edwardcapriolo/hive-rank
Philip Tromans has another here https://github.com/philiptromans/hive-udf
If you're on 0.11 already there is a native version.
Just copy and paste the whole long expressions to their second occurrences.
From: dyuti a hadoop.hiv...@gmail.com
To: user@hive.apache.org
Sent: Friday, June 28, 2013 10:58 AM
Subject: Fwd: Need urgent help in hive query
Hi Experts,
I'm trying with the
Hi Michael,
Thanks for your help, is there any other possible options apart from this.
On Fri, Jun 28, 2013 at 10:33 PM, Michael Malak michaelma...@yahoo.comwrote:
Just copy and paste the whole long expressions to their second occurrences.
--
*From:* dyuti a
Hi Folks,
I did not have success using http://wiki.apache.org/hadoop/EclipseEnvironment .
I followed the tutorial
http://blog.shiftehfar.org/?p=647 to build hadoop in eclipse.
I get this error when I build hadoop-1.0.4 in eclipse juno.
Description ResourcePathLocation
Split up the query – put results of the subquery into a table, run the final
query on that, then drop the temporary table.
Robin
From: dyuti a hadoop.hiv...@gmail.commailto:hadoop.hiv...@gmail.com
Reply-To: user@hive.apache.orgmailto:user@hive.apache.org
The next Bay Area Hive User Group Meetup is happening on
Wednesday, July 24th at LinkedIn's offices in Mountain View. The
format will be a series of short (15 min) talks preceded by
refreshments and networking. Please join me in thanking LinkedIn
for providing the meeting space and refreshments.
It probably won't make a difference to performance — the subqueries will be
executed in separate map-reduce jobs, and the output put on disk anyway.
First, get it to work; second, optimize.
Robin
From: dyuti a hadoop.hiv...@gmail.commailto:hadoop.hiv...@gmail.com
Reply-To:
The stub of an Indexing user doc in the Hive wiki's Language Manual now
includes some simple examples, adapted from the test suite.
Would someone who uses Hive indexes please review it and make any necessary
corrections additions? For example, I omitted examples of indexes on
partitioned
Hi Stephen,
My query is actually more complex , hive will generate 2 mapreduces,
in the first solution , it runs 17 mappers / 30 reducers and 10 mappers /
30 reducers (reducer num is set manually)
in the second solution , it runs 6 mappers / 1 reducer and 4 mappers / 1
reducers for each partition
14 matches
Mail list logo
