From bf3cf7b7013bd17e5b9c568211d5fe1aba33a628 Mon Sep 17 00:00:00 2001
From: Ilya Sevostyanov <1166655+i-sevostyanov@users.noreply.github.com>
Date: Thu, 13 Jun 2024 21:42:52 +0400
Subject: [PATCH] fix: add a missing item to the switch in the comparison
 operation

---
 internal/sql/expr/comparison/greater_or_equal.go | 2 ++
 internal/sql/expr/comparison/greater_than.go     | 2 ++
 internal/sql/expr/comparison/less_or_equal.go    | 2 ++
 internal/sql/expr/comparison/less_than.go        | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/internal/sql/expr/comparison/greater_or_equal.go b/internal/sql/expr/comparison/greater_or_equal.go
index d57f31f..4e9c391 100644
--- a/internal/sql/expr/comparison/greater_or_equal.go
+++ b/internal/sql/expr/comparison/greater_or_equal.go
@@ -23,6 +23,8 @@ func GreaterOrEqual(left, right sql.Value) (sql.Value, error) {
 			return greaterOrEqual[float64](left, right), nil
 		case sql.Text:
 			return greaterOrEqual[string](left, right), nil
+		case sql.Null:
+			return datatype.NewNull(), nil
 		}
 	}
 
diff --git a/internal/sql/expr/comparison/greater_than.go b/internal/sql/expr/comparison/greater_than.go
index 6fafd20..361e980 100644
--- a/internal/sql/expr/comparison/greater_than.go
+++ b/internal/sql/expr/comparison/greater_than.go
@@ -23,6 +23,8 @@ func GreaterThan(left, right sql.Value) (sql.Value, error) {
 			return greaterThan[float64](left, right), nil
 		case sql.Text:
 			return greaterThan[string](left, right), nil
+		case sql.Null:
+			return datatype.NewNull(), nil
 		}
 	}
 
diff --git a/internal/sql/expr/comparison/less_or_equal.go b/internal/sql/expr/comparison/less_or_equal.go
index cc84aa4..66c91c9 100644
--- a/internal/sql/expr/comparison/less_or_equal.go
+++ b/internal/sql/expr/comparison/less_or_equal.go
@@ -23,6 +23,8 @@ func LessOrEqual(left, right sql.Value) (sql.Value, error) {
 			return lessOrEqual[float64](left, right), nil
 		case sql.Text:
 			return lessOrEqual[string](left, right), nil
+		case sql.Null:
+			return datatype.NewNull(), nil
 		}
 	}
 
diff --git a/internal/sql/expr/comparison/less_than.go b/internal/sql/expr/comparison/less_than.go
index 62ff5dd..673089d 100644
--- a/internal/sql/expr/comparison/less_than.go
+++ b/internal/sql/expr/comparison/less_than.go
@@ -23,6 +23,8 @@ func LessThan(left, right sql.Value) (sql.Value, error) {
 			return lessThan[float64](left, right), nil
 		case sql.Text:
 			return lessThan[string](left, right), nil
+		case sql.Null:
+			return datatype.NewNull(), nil
 		}
 	}