Solved

Hive query question

Posted on 2014-02-14
5
219 Views
Last Modified: 2014-03-17
I have a table in hive:
table1
f1  f2
x   10
y 20
p 40
q 55

How can I query the above table in hive to obtain one record like the following:
x:10, y:20, p:40, q:55

Thank you.
0
Comment
Question by:toooki
5 Comments
 
LVL 45

Expert Comment

by:aikimark
ID: 39860408
Are you talking about the Windows registry hive or some other database?

What language are you using?
0
 

Author Comment

by:toooki
ID: 39860989
I am using Apache Hive.
0
 
LVL 100

Expert Comment

by:mlmcc
ID: 39861420
In looking at the Hive language manual it uses fairly standard SQL

SELECT * FROM sales WHERE amount > 10 AND region = "US"

Link to the language manual
https://cwiki.apache.org/confluence/display/Hive/LanguageManual

mlmcc
0
 
LVL 45

Expert Comment

by:aikimark
ID: 39862084
My guess would be some combination of ClusterBy and Transform, however, I have no way to test this.
0
 
LVL 40

Accepted Solution

by:
Sharath earned 500 total points
ID: 39932206
You need COLLECT_SET function. try this.
SELECT COLLECT_SET(Col) AS Res_Col
  FROM (SELECT CONCAT(f1,':',f2) AS Col
		  FROM table1) T1

Open in new window

0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I guess that all of us know that caching the data usually increase the performance, but I worried if all of us are aware about the risk that caching the data provides and how to minimize this.  That’s the reason why I decided to write this short art…
Shadow IT is coming out of the shadows as more businesses are choosing cloud-based applications. It is now a multi-cloud world for most organizations. Simultaneously, most businesses have yet to consolidate with one cloud provider or define an offic…
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question