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From "Benjamin Lerer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11935) Add support for arithmetic operators
Date Thu, 02 Jun 2016 09:51:59 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15312054#comment-15312054
] 

Benjamin Lerer commented on CASSANDRA-11935:
--------------------------------------------

I was not necessarily thinking about this ticket. For this ticket I believe that we should
go with native functions.
My concern is that today all functions are kept in memory even if they are probably not use
most of the time. As we keep on adding functions (which is not in my opinion a bad stuff)
the amount of memory that is used by functions keep on increasing. I do not think that it
is a problem right now but I think that we should probably start thinking about using another
approach (more on demand). 

> Add support for arithmetic operators
> ------------------------------------
>
>                 Key: CASSANDRA-11935
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11935
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: CQL
>            Reporter: Benjamin Lerer
>            Assignee: Benjamin Lerer
>             Fix For: 3.x
>
>
> The goal of this ticket is to add support for arithmetic operators:
> * {{-}}: Change the sign of the argument
> * {{+}}: Addition operator
> * {{-}}: Minus operator
> * {{*}}: Multiplication operator
> * {{/}}: Division operator
> * {{%}}: Modulo operator
> This ticket we should focus on adding operator only for numeric types to keep the scope
as small as possible. Dates and string operations will be adressed in follow up tickets.
> The operation precedence should be:
> # {{*}}, {{/}}, {{%}}
> # {{+}}, {{-}}
> Some implicit data conversion should be performed when operations are performed on different
types (e.g. double + int).



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