sunjincheng created FLINK-6979:
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Summary: Add documentation for Aggregation Functions
Key: FLINK-6979
URL: https://issues.apache.org/jira/browse/FLINK-6979
Project: Flink
Issue Type: Improvement
Components: Documentation, Table API & SQL
Reporter: sunjincheng
Fix For: 1.4.0
The User-defined Functions documentation is currently lacking a description of
Aggregation Functions.
The page has a placeholder section with a TODO: ./docs/dev/table/udfs.md.
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