[FLINK-18516] Improve error message for rank function in streaming mode

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Works for Me
• Component/s: Table SQL / Planner
• Labels: auto-deprioritized-major
• Assignee: Unassigned
• Reporter: Rui Li
• Created: 07/Jul/20 08:35
• Updated: 04/Jun/21 06:23
• Resolved: 04/Jun/21 06:23

Description

The following query currently fails with NPE:

create table foo (x int,y string,p as proctime()) with ...;
select x,y,row_number() over (partition by x order by p) from foo;

which can be difficult for users to figure out the reason of the failure.