[fix](nereids)adjust aggregate function's nullable property

apache / doris

Apache Doris is an easy-to-use, high performance and unified analytics database.

https://doris.apache.org

Apache License 2.0

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Open starocean999 opened 3 days ago

starocean999 commented 3 days ago

aggregate functions can be divided into 3 types by their nullable properties:

starocean999 commented 3 days ago

run buildall