luoyuxia created FLINK-27718:
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Summary: Hive dialect supports to count mutiple fields
Key: FLINK-27718
URL: https://issues.apache.org/jira/browse/FLINK-27718
Project: Flink
Issue Type: Sub-task
Reporter: luoyuxia
In Hive, it's support to count multiple fields using the following sql:
{code:java}
select count(distinct a, b) from src
{code}
We are also expected to support it while using Hive dialect in Flink.
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