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Posted to dev@phoenix.apache.org by "Vishal Mahajan (JIRA)" <ji...@apache.org> on 2016/08/17 14:46:20 UTC
[jira] [Commented] (PHOENIX-2722) support mysql "limit,offset"
clauses
[ https://issues.apache.org/jira/browse/PHOENIX-2722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15424636#comment-15424636 ]
Vishal Mahajan commented on PHOENIX-2722:
-----------------------------------------
Can we also mention @since version in phoenix docs for this feature?
> 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
> Fix For: 4.8.0
>
> 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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