[jira] [Updated] (LENS-710) Allow column name mapping for few/all columns in underlying storage tables

["Amareshwari Sriramadasu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LENS-710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Amareshwari Sriramadasu updated LENS-710:
-----------------------------------------
    Attachment: LENS-710.2.patch

Patch after review.

> Allow column name mapping for few/all columns in underlying storage tables
> --------------------------------------------------------------------------
>
>                 Key: LENS-710
>                 URL: https://issues.apache.org/jira/browse/LENS-710
>             Project: Apache Lens
>          Issue Type: Improvement
>          Components: driver-jdbc
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 2.4
>
>         Attachments: LENS-710.2.patch
>
>
> This improvement proposed is to accept column mapping for few or all columns in underlying storage tables - which allows column to be different in underlying storage than column in fact/dimtable
> For example:
> Fact1 has col1
> S1_Fact1 has col1
> S2_Fact2 has col1_variant
> S2_Fact2 can have column mapping property specified as col1:col1_variant. If S2_Fact2 becomes the eligible storage table, then query should be written with col1_variant if col1 is queried.



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