[jira] [Resolved] (IGNITE-4031) SQL: Optimize Date\Time\Timestamp function arguments conversion.

["Andrew Mashenkov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-4031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Mashenkov resolved IGNITE-4031.
--------------------------------------
    Resolution: Won't Fix

Resolved within H2 version upgrade.

> SQL: Optimize Date\Time\Timestamp function arguments conversion.
> ----------------------------------------------------------------
>
>                 Key: IGNITE-4031
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4031
>             Project: Ignite
>          Issue Type: Task
>          Components: sql
>    Affects Versions: 1.6
>            Reporter: Andrew Mashenkov
>            Priority: Major
>              Labels: sql-performance
>
> When sql function with Date\Time\Timestamp arguments is used, H2 internals convert these objects using java.util.Calendar before pass them as arguments.
> In current H2 version we use: DateTimeUtils holds cache java.util.Calendar instance in static field and synchronize every operation on it.
> If its possible, we need to have workaround to use java.util.Calendar more effectively as it done for timestamp fields. See IgniteH2Indexing.wrap() method.
> Startpoint: GridSQLQueryParser.FUNC_ALIAS



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