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https://issues.apache.org/jira/browse/CALCITE-5280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bertil Chapuis reopened CALCITE-5280:
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> Implement geometry aggregate functions
> --------------------------------------
>
> Key: CALCITE-5280
> URL: https://issues.apache.org/jira/browse/CALCITE-5280
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.32.0
> Reporter: Bertil Chapuis
> Assignee: Bertil Chapuis
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.33.0
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Geometry aggregate functions (ST_Accum, ST_Collect, and ST_Union) are
> currently missing in Calcite. Using an AggregateFunctionImpl looks be pretty
> straightforward, but many aggregate function implement SqlAggFunction
> directly.
> [~julianhyde] What would be the best way to implement them?
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