From b7eaaffc3a39c61208defd593452f122b98258fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=B6=9B?= <midnite@outlook.com>
Date: Tue, 27 Jun 2023 17:00:44 +0800
Subject: [PATCH] =?UTF-8?q?enhance(types):=E5=A2=9E=E5=8A=A0=E5=8C=BA?=
 =?UTF-8?q?=E9=97=B4=E7=B1=BB=E5=9E=8B=E4=B8=AD=E5=85=B3=E4=BA=8E=E7=A9=BA?=
 =?UTF-8?q?=E5=8C=BA=E9=97=B4=E7=9A=84=E5=88=A4=E6=96=AD=E3=80=82?=
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---
 types/daterange.go     | 5 +++++
 types/datetimerange.go | 5 +++++
 types/range.go         | 4 ++++
 3 files changed, 14 insertions(+)

diff --git a/types/daterange.go b/types/daterange.go
index 6b34a8a..b71b89c 100644
--- a/types/daterange.go
+++ b/types/daterange.go
@@ -134,3 +134,8 @@ func (dr DateRange) SafeLower() Date {
 		return MinDate()
 	}
 }
+
+func (dr DateRange) IsEmptyOrWild() bool {
+	return (dr.LowerType == pgtype.Unbounded && dr.UpperType == pgtype.Unbounded) ||
+		(dr.LowerType == pgtype.Empty && dr.UpperType == pgtype.Empty)
+}
diff --git a/types/datetimerange.go b/types/datetimerange.go
index 5927d8d..971fcf9 100644
--- a/types/datetimerange.go
+++ b/types/datetimerange.go
@@ -112,3 +112,8 @@ func (dr *DateTimeRange) SetUpperUnbounded() {
 	dr.Range.Upper = MaxDateTime()
 	dr.Range.UpperType = pgtype.Unbounded
 }
+
+func (dr DateTimeRange) IsEmptyOrWild() bool {
+	return (dr.Range.LowerType == pgtype.Unbounded && dr.Range.UpperType == pgtype.Unbounded) ||
+		(dr.Range.LowerType == pgtype.Empty || dr.Range.UpperType == pgtype.Empty)
+}
diff --git a/types/range.go b/types/range.go
index 178b59f..374db35 100644
--- a/types/range.go
+++ b/types/range.go
@@ -15,6 +15,10 @@ type ToString interface {
 	ToString() string
 }
 
+type CheckEmptyOrWild interface {
+	IsEmptyOrWild() bool
+}
+
 // 将一个字符串拆解解析为一个 Postgresql 范围类型的值。
 func destructureToRange[T any, PT interface {
 	Parse