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https://issues.apache.org/jira/browse/ASTERIXDB-2670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Westmann updated ASTERIXDB-2670:
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Fix Version/s: 0.9.8
(was: 0.9.7)
> Optimization opportunities for OBJECT_REMOVE_FIELDS
> ---------------------------------------------------
>
> Key: ASTERIXDB-2670
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2670
> Project: Apache AsterixDB
> Issue Type: Improvement
> Components: SQL - Translator SQL++
> Affects Versions: 0.9.4.1
> Reporter: Michael J. Carey
> Assignee: Dmitry Lychagin
> Priority: Major
> Fix For: 0.9.8
>
>
> Consider a query like the following:
> SELECT VALUE OBJECT_REMOVE_FIELDS(t, ["user"]) FROM (SELECT VALUE t FROM
> TinySocial.ChirpMessages t) t;
> This query will retain all fields in the ChirpMessages except for user, but
> the SQL++ compiler will currently not understand this (viewing the function
> call as a black box in all likelihood). There is a future opportunity to
> gain performance by pushing the implied projection down lower in the query
> pipeline, in cases where the query is more complex.
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