Jia Yu created SEDONA-151:
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Summary: Add ST aggregators to Sedona Flink
Key: SEDONA-151
URL: https://issues.apache.org/jira/browse/SEDONA-151
Project: Apache Sedona
Issue Type: Improvement
Reporter: Jia Yu
1. Add the following aggregation functions to Sedona, just like Sedona Spark
ST_Envelope_Aggr
ST_Union_Aggr
2. enable event time and proc time in all synthetic test data
All test tables now have two time attributes, namely "event_time", "proc_time"
The 2 attributes can be used in Flink window queries.
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