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From "Ankit Singhal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-2722) support mysql "limit,offset" clauses
Date Thu, 07 Apr 2016 18:43:25 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-2722?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ankit Singhal updated PHOENIX-2722:
-----------------------------------
    Attachment: PHOENIX-2722_v1_rebased.patch

[~jamestaylor], is it ready for commit now?

> support mysql "limit,offset" clauses 
> -------------------------------------
>
>                 Key: PHOENIX-2722
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2722
>             Project: Phoenix
>          Issue Type: New Feature
>            Reporter: Ankit Singhal
>            Assignee: Ankit Singhal
>            Priority: Minor
>         Attachments: PHOENIX-2722.patch, PHOENIX-2722_formatted.patch, PHOENIX-2722_v1_rebased.patch
>
>
> For serial query(query with “serial" hint or  “limit" without "order by”), we can
limit each scan(using page filter) to “limit+offset” instead of limit earlier.
> And then, for all queries, we can forward the relevant client iterators to the offset
provided and then return the result.
> syntax
> {code}
> [ LIMIT { count } ]
>     [ OFFSET start [ ROW | ROWS ] ]
>     [ FETCH { FIRST | NEXT } [ count ] { ROW | ROWS } ONLY ]
> {code}
> Some new keywords(OFFSET,FETCH,ROW, ROWS,ONLY) are getting introduced so users might
need to see that they are not using them as column name or something.
> WDYT, [~jamestaylor]



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