Rui Li created FLINK-19891:
------------------------------
Summary: ScalarOperatorGens should generate a not-null type for IS
NULL and IS NOT NULL
Key: FLINK-19891
URL: https://issues.apache.org/jira/browse/FLINK-19891
Project: Flink
Issue Type: Bug
Components: Table SQL / Planner
Reporter: Rui Li
Fix For: 1.12.0-- This message was sent by Atlassian Jira (v8.3.4#803005)
