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https://issues.apache.org/jira/browse/IGNITE-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15778549#comment-15778549
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Alexander Paschenko commented on IGNITE-4490:
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What has changed: when query contains no expressions, just constants and
parameters, and insert is done in rows based manner, then such query is
processed in a way similar to fast UPDATE and DELETE.
> Optimize DML for fast INSERT and MERGE
> --------------------------------------
>
> Key: IGNITE-4490
> URL: https://issues.apache.org/jira/browse/IGNITE-4490
> Project: Ignite
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.8
> Reporter: Alexander Paschenko
> Assignee: Vladimir Ozerov
> Fix For: 1.8
>
>
> It's possible to avoid any SQL querying and map some INSERT and MERGE
> statements to cache operations in a way similar to that of UPDATE and DELETE
> - i.e. don't make queries when there are no expressions to evaluate in the
> query and enhance update plans to perform direct cache operations when INSERT
> and MERGE affect columns {{_key}} and {{_val}} only.
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