[FLINK-27375] Fix exception when no order keys exists in over() in Hive Dialect

• Type: Sub-task
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.16.0
• Component/s: Connectors / Hive
• Assignee: luoyuxia
• Reporter: luoyuxia
• Created: 25/Apr/22 04:07
• Updated: 19/Dec/22 07:32

Description

Hive support "over()" without order keys inside such as 

select row_number() over(), x, y from foo; 

But such sql will throw exception for Flink doesn't support the case that no order key in "over()".