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https://issues.apache.org/jira/browse/IGNITE-27976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18061572#comment-18061572
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Vladislav Pyatkov commented on IGNITE-27976:
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[~alexpl] [~vladsz83] [~zstan]
Guys, I did the first step to implement window functions for Calcite SQL.
Currently this PR rewrites a query with an unbounded frame to a query with a
join.
Please look at this change.
> Support OVER clause with unbounded frame
> ----------------------------------------
>
> Key: IGNITE-27976
> URL: https://issues.apache.org/jira/browse/IGNITE-27976
> Project: Ignite
> Issue Type: Improvement
> Reporter: Vladislav Pyatkov
> Assignee: Vladislav Pyatkov
> Priority: Major
> Labels: ignite-2
> Time Spent: 20m
> Remaining Estimate: 0h
>
> h3. Motivation
> Ignite has to support the window function, but the whole patch can take a lot
> of effort. However, a part of the queries that has OVER clause we can support
> relatively easily.
> We can start the implementation from parsing OVER clause in SQL.
> h3. Definition of done
> Support queries with OVER clause and unbounded frame.
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