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https://issues.apache.org/jira/browse/CALCITE-5281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17643618#comment-17643618
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Julian Hyde commented on CALCITE-5281:
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I don't think I'll get time to review this or look into the cursor issue very
deeply. I have a hunch that cursors are still the right approach, they used to
work long ago, and it's a medium-sized task to get them working again. If there
isn't a jira case to fix cursors, please log one. Ask on the dev list and see
if anyone is prepared to work on cursors.
> Implement geometry set returning functions (SRF)
> ------------------------------------------------
>
> Key: CALCITE-5281
> URL: https://issues.apache.org/jira/browse/CALCITE-5281
> Project: Calcite
> Issue Type: Improvement
> Components: spatial
> Reporter: Bertil Chapuis
> Assignee: Bertil Chapuis
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> The idea is to implement set returning functions, such as ST_Explode in H2GIS
> and ST_Dump in PostGIS. Is the Uncollect class a good starting point?
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