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Posted to issues@spark.apache.org by "Martin Senne (JIRA)" <ji...@apache.org> on 2015/10/05 11:44:26 UTC

[jira] [Updated] (SPARK-10868) monotonicallyIncreasingId() supports offset for indexing

     [ https://issues.apache.org/jira/browse/SPARK-10868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martin Senne updated SPARK-10868:
---------------------------------
    Description: 
With SPARK-7135 and https://github.com/apache/spark/pull/5709 `monotonicallyIncreasingID()` allows to create an index column with unique ids. The indexing always starts at 0 (no offset).

**Feature wish**: Having a parameter `offset`, such that the function can be used as

    {{monotonicallyIncreasingID( offset )}}

and indexing *starts at `offset` instead of 0*.

**Background and justification**: 

Additional row for a DataFrame that is written to a DB (via .jdbc).
In detail:
- A DataFrame A (containing an ID column) and having indices from 0 to 199 in that column.
  - 
- 




  was:
With SPARK-7135 and https://github.com/apache/spark/pull/5709 `monotonicallyIncreasingID()` allows to create an index column with unique ids. The indexing always starts at 0 (no offset).

Feature wish: Having a parameter `offset`, such that the function can be used as

    {{monotonicallyIncreasingID( offset )}}

and indexing *starts at `offset` instead of 0*.




> monotonicallyIncreasingId() supports offset for indexing
> --------------------------------------------------------
>
>                 Key: SPARK-10868
>                 URL: https://issues.apache.org/jira/browse/SPARK-10868
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 1.5.0
>            Reporter: Martin Senne
>
> With SPARK-7135 and https://github.com/apache/spark/pull/5709 `monotonicallyIncreasingID()` allows to create an index column with unique ids. The indexing always starts at 0 (no offset).
> **Feature wish**: Having a parameter `offset`, such that the function can be used as
>     {{monotonicallyIncreasingID( offset )}}
> and indexing *starts at `offset` instead of 0*.
> **Background and justification**: 
> Additional row for a DataFrame that is written to a DB (via .jdbc).
> In detail:
> - A DataFrame A (containing an ID column) and having indices from 0 to 199 in that column.
>   - 
> - 



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