Hequn Cheng created FLINK-12533:
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Summary: Introduce TABLE_AGGREGATE_FUNCTION FunctionDefinition.Type
Key: FLINK-12533
URL: https://issues.apache.org/jira/browse/FLINK-12533
Project: Flink
Issue Type: Improvement
Components: Table SQL / API
Reporter: Hequn Cheng
Assignee: Hequn Cheng
Currently, there are four kinds of {{FunctionDefinition.Type}},
{code:java}
public enum Type {
AGGREGATE_FUNCTION,
SCALAR_FUNCTION,
TABLE_FUNCTION,
OTHER_FUNCTION
}
{code}
The Type AGGREGATE_FUNCTION is used to express both AggregateFunction and
TableAggregateFunction. However, due to the two kinds of the function contains
different semantics. It would be nice if we can separate these two kinds of
functions more clearly by introducing another type TABLE_AGGREGATE_FUNCTION.
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