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https://issues.apache.org/jira/browse/DRILL-379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13908878#comment-13908878
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Jinfeng Ni commented on DRILL-379:
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Hi Yash,
The math functions I did is not a complete list. So, it would be great that you
can work on other math functions at the same time.
For codegen, I think it would be good to use codegen, if several functions
share similar implementation. Using codegen and template will reduce the effort
to maintain a long list of similar function implementations. If the function
is quite unique, then I feel probably it does not make much sense to use
codegen. Just my personal preferences.
> Support part of commonly used String functions and Math functions in Drill.
> ----------------------------------------------------------------------------
>
> Key: DRILL-379
> URL: https://issues.apache.org/jira/browse/DRILL-379
> Project: Apache Drill
> Issue Type: New Feature
> Reporter: Jinfeng Ni
> Assignee: Jinfeng Ni
> Attachments: Drill-379.1.patch.txt
>
>
> We will add the support of some commonly used String functions and Math
> functions (over int, floating-point number).
> 1. like
> 2. similar
> 3. regexp_replace
> 4. char_length
> 4. oct_length
> 5. bit_length
> 6. position
> 7. strops
> 8. lower
> 9. upper
> 10. initcap
> 11. substring/substr
> 12. left
> 13. right
> 14. replace
> 15.lpad
> 16 rpad
> 17. ltrim
> 18. rtrim
> 19. concat.
> Math : abs, ceil, floor, sqrt, sign, trunc.
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