[CALCITE-2555] RexSimplify: >=(true, null) could be simplified to null

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.17.0
• Fix Version/s: 1.18.0
• Component/s: core
• Labels: newbie
• Assignee: Julian Hyde
• Reporter: Vladimir Sitnikov
• Created: 13/Sep/18 06:32
• Updated: 23/Dec/18 00:12
• Resolved: 19/Sep/18 09:27

Description

@Test public void simplifyComparisonWithNull() {
  checkSimplify2(ge(trueLiteral, falseLiteral), "true", "true");
  checkSimplify2(ge(trueLiteral, nullBool), "null", "false");
  checkSimplify2(ge(nullBool, nullBool), "null", "false");
}

Issue Links

• relates to: HIVE-20557 Constant Folding: null > (expr) is not constant folded to NULL
• links to: PR 831