This syntax is wrong for both hive and SQL: hive> select * from stringmap where attributename='foo' order by 'attributevalue';
This is right. hive> select * from stringmap where attributename='foo' order by attributevalue; On Tue, Mar 13, 2012 at 4:54 PM, Keith Wiley <kwi...@keithwiley.com> wrote: > Um, this is weird. It simply isn't modifying the order of the returned rows > at all. I get the same result with no 'order by' clause as with one. Adding > a limit or specifying 'asc' has no effect. Using 'sort by' also has no > effect. The column used for ordering is type INT. In the example below, I > was hoping to "sort" or "order" the results according to the third column. > Like I said, I also tried adding 'limit 10' and/or 'asc' to the end of the > query; they had no effect. The jobtracker shows a single mapper and a single > reducer being used for the job incidentally, so it can't be some sort of > multi-reducer sort discrepancy. > > hive> describe stringmap; > OK > objecttypecode int > attributename string > attributevalue int > langid int > value string > displayorder int > Time taken: 0.074 seconds > hive> > > > hive> select * from stringmap where attributename='foo' order by > 'attributevalue'; > Total MapReduce jobs = 1 > Launching Job 1 out of 1 > Number of reduce tasks determined at compile time: 1 > In order to change the average load for a reducer (in bytes): > set hive.exec.reducers.bytes.per.reducer=<number> > In order to limit the maximum number of reducers: > set hive.exec.reducers.max=<number> > In order to set a constant number of reducers: > set mapred.reduce.tasks=<number> > Starting Job = job_201202221500_0114, Tracking URL = > http://localhost:50030/jobdetails.jsp?jobid=job_201202221500_0114 > Kill Command = /media/sdb1/kwiley/hadoop/hadoop-0.20.2-cdh3u3/bin/hadoop job > -Dmapred.job.tracker=localhost:9001 -kill job_201202221500_0114 > 2012-03-13 14:45:28,418 Stage-1 map = 0%, reduce = 0% > 2012-03-13 14:45:31,428 Stage-1 map = 100%, reduce = 0% > 2012-03-13 14:45:39,459 Stage-1 map = 100%, reduce = 33% > 2012-03-13 14:45:40,463 Stage-1 map = 100%, reduce = 100% > Ended Job = job_201202221500_0114 > OK > 3 foo 6 1033 6 - aaa 6 > 3 foo 3 1033 3 - bbb 3 > 3 foo 4 1033 4 - ccc 4 > 4 foo 1 1033 Default Value 1 > 3 foo 2 1033 2 - ddd 2 > 3 foo 1 1033 1 - eee 1 > 3 foo 5 1033 5 - fff 5 > Time taken: 17.954 seconds > hive> > > ________________________________________________________________________________ > Keith Wiley kwi...@keithwiley.com keithwiley.com > music.keithwiley.com > > "Luminous beings are we, not this crude matter." > -- Yoda > ________________________________________________________________________________ >
