From c387c7d9ba8d991bdcda09d711c577f1a881f87d Mon Sep 17 00:00:00 2001
From: Jinzhu <wosmvp@gmail.com>
Date: Thu, 31 Oct 2013 22:49:48 +0800
Subject: [PATCH] Polish The Not Method

---
 README.md    |  4 ++++
 do.go        |  3 +++
 gorm_test.go | 12 ++++++++++++
 3 files changed, 19 insertions(+)

diff --git a/README.md b/README.md
index b0adb8a4..4251da6c 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,10 @@ db.Not([]int64{}).First(&user)
 //// user -> select * from users;
 db.Not("name", "jinzhu").First(&user)
 //// user -> select * from users where name <> "jinzhu"
+db.Not("name = ?", "jinzhu").First(&user)
+//// user -> select * from users where NOT(name = "jinzhu")
+db.Not("name <> ?", "jinzhu").First(&user)
+//// user -> select * from users where NOT(name <> "jinzhu")
 db.Not("name", []string{"jinzhu", "jinzhu 2"}).First(&user)
 //// user -> select * from users where name NOT IN ("jinzhu", "jinzhu 2")
 db.Not(User{Name: "jinzhu"}).First(&user)
diff --git a/do.go b/do.go
index 1850d7f3..fb3969c6 100644
--- a/do.go
+++ b/do.go
@@ -434,6 +434,9 @@ func (s *Do) buildNotCondition(clause map[string]interface{}) (str string) {
 		if regexp.MustCompile("^\\s*\\d+\\s*$").MatchString(value) {
 			id, _ := strconv.Atoi(value)
 			return fmt.Sprintf("(%v <> %v)", s.model.primaryKeyDb(), id)
+		} else if regexp.MustCompile("(?i) (=|<>|>|<|LIKE|IS) ").MatchString(value) {
+			str = fmt.Sprintf(" NOT (%v) ", value)
+			not_equal_sql = fmt.Sprintf(" NOT (%v) ", value)
 		} else {
 			str = fmt.Sprintf(" (%v NOT IN (?)) ", value)
 			not_equal_sql = fmt.Sprintf(" (%v <> ?) ", value)
diff --git a/gorm_test.go b/gorm_test.go
index a5cc30d7..4fa3bcaf 100644
--- a/gorm_test.go
+++ b/gorm_test.go
@@ -958,6 +958,18 @@ func TestNot(t *testing.T) {
 		t.Errorf("Should find all users's name not equal 3")
 	}
 
+	users4 = []User{}
+	db.Not("name = ?", "3").Find(&users4)
+	if len(users1)-len(users4) != int(name_3_count) {
+		t.Errorf("Should find all users's name not equal 3")
+	}
+
+	users4 = []User{}
+	db.Not("name <> ?", "3").Find(&users4)
+	if len(users4) != int(name_3_count) {
+		t.Errorf("Should find all users's name not equal 3")
+	}
+
 	db.Not(User{Name: "3"}).Find(&users5)
 	if len(users1)-len(users5) != int(name_3_count) {
 		t.Errorf("Should find all users's name not equal 3")