[jira] [Commented] (HIVE-3682) when output hive table to file,users should could have a separator of their own choice

["Lefty Leverenz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-3682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13925141#comment-13925141 ] 

Lefty Leverenz commented on HIVE-3682:
--------------------------------------

[~lars_francke] added this note to the wiki:  "As of Hive 0.11.0 the separator used can be specified, in earlier versions it was always the ^A character (\001)" and [~prasadm] added the ROW FORMAT syntax.  More details and some examples would be helpful.

* [LanguageManual DML:  Writing data into the filesystem from queries |https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DML#LanguageManualDML-Writingdataintothefilesystemfromqueries]



> when output hive table to file,users should could have a separator of their own choice
> --------------------------------------------------------------------------------------
>
>                 Key: HIVE-3682
>                 URL: https://issues.apache.org/jira/browse/HIVE-3682
>             Project: Hive
>          Issue Type: New Feature
>          Components: CLI
>    Affects Versions: 0.8.1
>         Environment: Linux 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:34:47 UTC 2011 i686 i686 i386 GNU/Linux
> java version "1.6.0_25"
> hadoop-0.20.2-cdh3u0
> hive-0.8.1
>            Reporter: caofangkun
>            Assignee: Sushanth Sowmyan
>             Fix For: 0.11.0
>
>         Attachments: HIVE-3682-1.patch, HIVE-3682.D10275.1.patch, HIVE-3682.D10275.2.patch, HIVE-3682.D10275.3.patch, HIVE-3682.D10275.4.patch, HIVE-3682.D10275.4.patch.for.0.11, HIVE-3682.with.serde.patch
>
>
> By default,when output hive table to file ,columns of the Hive table are separated by ^A character (that is \001).
> But indeed users should have the right to set a seperator of their own choice.
> Usage Example:
> create table for_test (key string, value string);
> load data local inpath './in1.txt' into table for_test
> select * from for_test;
> UT-01：default separator is \001 line separator is \n
> insert overwrite local directory './test-01' 
> select * from src ;
> create table array_table (a array<string>, b array<string>)
> ROW FORMAT DELIMITED
> FIELDS TERMINATED BY '\t'
> COLLECTION ITEMS TERMINATED BY ',';
> load data local inpath "../hive/examples/files/arraytest.txt" overwrite into table table2;
> CREATE TABLE map_table (foo STRING , bar MAP<STRING, STRING>)
> ROW FORMAT DELIMITED
> FIELDS TERMINATED BY '\t'
> COLLECTION ITEMS TERMINATED BY ','
> MAP KEYS TERMINATED BY ':'
> STORED AS TEXTFILE;
> UT-02：defined field separator as ':'
> insert overwrite local directory './test-02' 
> row format delimited 
> FIELDS TERMINATED BY ':' 
> select * from src ;
> UT-03: line separator DO NOT ALLOWED to define as other separator 
> insert overwrite local directory './test-03' 
> row format delimited 
> FIELDS TERMINATED BY ':' 
> select * from src ;
> UT-04: define map separators 
> insert overwrite local directory './test-04' 
> row format delimited 
> FIELDS TERMINATED BY '\t'
> COLLECTION ITEMS TERMINATED BY ','
> MAP KEYS TERMINATED BY ':'
> select * from src;



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