From 07391e1d5e1dc67386e1a9ed4f8db45b3593e027 Mon Sep 17 00:00:00 2001
From: Boban Acimovic <boban.acimovic@gmail.com>
Date: Fri, 2 Dec 2022 08:34:44 +0100
Subject: [PATCH] add empty

---
 pgtype/range.go      | 4 ++++
 pgtype/range_test.go | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/pgtype/range.go b/pgtype/range.go
index 8eb2281de..56675002f 100644
--- a/pgtype/range.go
+++ b/pgtype/range.go
@@ -385,6 +385,10 @@ func (dst *Range[T]) UnmarshalJSON(b []byte) error {
 		Valid:     true,
 	}
 
+	if dst.LowerType == Empty && dst.UpperType == Empty {
+		return nil
+	}
+
 	if err = json.Unmarshal([]byte(`"`+r.Lower+`"`), &dst.Lower); err != nil {
 		return err
 	}
diff --git a/pgtype/range_test.go b/pgtype/range_test.go
index 702c0dd7f..7b8ce5a27 100644
--- a/pgtype/range_test.go
+++ b/pgtype/range_test.go
@@ -249,6 +249,11 @@ func TestRangeDateUnmarshalJSON(t *testing.T) {
 		result Range[Date]
 	}{
 		{src: "null", result: Range[Date]{}},
+		{src: `"empty"`, result: Range[Date]{
+			LowerType: Empty,
+			UpperType: Empty,
+			Valid:     true,
+		}},
 		{src: `"(2022-12-01,2022-12-31)"`, result: Range[Date]{
 			Lower:     Date{Time: time.Date(2022, 12, 1, 0, 0, 0, 0, time.UTC), Valid: true},
 			Upper:     Date{Time: time.Date(2022, 12, 31, 0, 0, 0, 0, time.UTC), Valid: true},