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Hive query question

Posted on 2014-02-14
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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.
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Question by:toooki
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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?
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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.
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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

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