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https://issues.apache.org/jira/browse/CALCITE-1861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016385#comment-17016385
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Julian Hyde commented on CALCITE-1861:
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[~mmior], I got a lot of it working in my branch
https://github.com/julianhyde/calcite/commits/1861-spatial. I don't recall why
I didn't mark it 'complete' and merge to master. Let me rebase that branch onto
latest master.
I recall that I got certain cases working (e.g. a column based on space-filling
curve, that allows points-near-a-constant-point and points-in-a-constant-region
queries to work), and others I did not complete (e.g. a table that contains
tiles, to allow regions-that-overlap-regions queries to work).
Please ask your student to post comments to this case; we can collaborate here.
> Spatial Indexes
> ---------------
>
> Key: CALCITE-1861
> URL: https://issues.apache.org/jira/browse/CALCITE-1861
> Project: Calcite
> Issue Type: Improvement
> Components: spatial
> Reporter: Atri Sharma
> Priority: Major
> Labels: gsoc2018
>
> Many Calcite users, like Phoenix and Flink can benefit from support of
> Spatial indexes.
> See:
> http://revenant.ca/www/postgis/workshop/indexing.html
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