From 4c0015fb30480d874675f145c008b24eecf5f783 Mon Sep 17 00:00:00 2001
From: Michael Xu <xzhseh@gmail.com>
Date: Sat, 3 Feb 2024 17:31:10 -0500
Subject: [PATCH] remove unnecessary expr in expr.proto

---
 proto/expr.proto              | 3 ---
 src/frontend/src/expr/pure.rs | 1 -
 2 files changed, 4 deletions(-)

diff --git a/proto/expr.proto b/proto/expr.proto
index e991e7f017a74..e26b725b49737 100644
--- a/proto/expr.proto
+++ b/proto/expr.proto
@@ -88,9 +88,6 @@ message ExprNode {
     // Optimize case-when expression to constant lookup
     // when arms are in a large scale with simple form
     CONSTANT_LOOKUP = 624;
-    // Optimized in frontend
-    // should be invisible to backend
-    CONSTANT_CASE_WHEN_EVAL = 625;
     // ROUND(numeric, integer) -> numeric
     ROUND_DIGIT = 213;
     // ROUND(numeric) -> numeric
diff --git a/src/frontend/src/expr/pure.rs b/src/frontend/src/expr/pure.rs
index 53209eedfdacb..c50f1cc2460b8 100644
--- a/src/frontend/src/expr/pure.rs
+++ b/src/frontend/src/expr/pure.rs
@@ -86,7 +86,6 @@ impl ExprVisitor for ImpureAnalyzer {
             | expr_node::Type::Rtrim
             | expr_node::Type::Case
             | expr_node::Type::ConstantLookup
-            | expr_node::Type::ConstantCaseWhenEval
             | expr_node::Type::RoundDigit
             | expr_node::Type::Round
             | expr_node::Type::Ascii