[CALCITE-3420] NullPointerException throws for implicit type coercion of nested SET operations

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.21.0
• Fix Version/s: 1.22.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Danny Chen
• Reporter: Danny Chen
• Created: 16/Oct/19 11:06
• Updated: 06/Mar/20 04:34
• Resolved: 17/Oct/19 02:28

Description

Check this sql in TypeCoercionTest:

select t1_varchar20 from t1 
  union select t2_int from t2
  union select t1_int from t1

Issue Links

• links to: GitHub Pull Request #1512