From cfd1cc586aff992a165730b734e496bca1e79d8e Mon Sep 17 00:00:00 2001
From: Jinzhu <wosmvp@gmail.com>
Date: Tue, 13 Feb 2018 08:32:22 +0800
Subject: [PATCH] Add 2D array support, close #1201

---
 query_test.go | 30 ++++++++++++++++++++++++++++++
 scope.go      | 16 ++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/query_test.go b/query_test.go
index 80ebd473..fac7d4d8 100644
--- a/query_test.go
+++ b/query_test.go
@@ -222,6 +222,36 @@ func TestSearchWithPlainSQL(t *testing.T) {
 	}
 }
 
+func TestSearchWithTwoDimensionalArray(t *testing.T) {
+	var users []User
+	user1 := User{Name: "2DSearchUser1", Age: 1, Birthday: parseTime("2000-1-1")}
+	user2 := User{Name: "2DSearchUser2", Age: 10, Birthday: parseTime("2010-1-1")}
+	user3 := User{Name: "2DSearchUser3", Age: 20, Birthday: parseTime("2020-1-1")}
+	DB.Create(&user1)
+	DB.Create(&user2)
+	DB.Create(&user3)
+
+	if dialect := DB.Dialect().GetName(); dialect == "mysql" || dialect == "postgres" {
+		if err := DB.Where("(name, age) IN (?)", [][]interface{}{{"2DSearchUser1", 1}, {"2DSearchUser2", 10}}).Find(&users).Error; err != nil {
+			t.Errorf("No error should happen when query with 2D array, but got %v", err)
+
+			if len(users) != 2 {
+				t.Errorf("Should find 2 users with 2D array, but got %v", len(users))
+			}
+		}
+	}
+
+	if dialect := DB.Dialect().GetName(); dialect == "mssql" {
+		if err := DB.Joins("JOIN (VALUES ?) AS x (col1, col2) ON x.col1 = name AND x.col2 = age", [][]interface{}{{"2DSearchUser1", 1}, {"2DSearchUser2", 10}}).Find(&users).Error; err != nil {
+			t.Errorf("No error should happen when query with 2D array, but got %v", err)
+
+			if len(users) != 2 {
+				t.Errorf("Should find 2 users with 2D array, but got %v", len(users))
+			}
+		}
+	}
+}
+
 func TestSearchWithStruct(t *testing.T) {
 	user1 := User{Name: "StructSearchUser1", Age: 1, Birthday: parseTime("2000-1-1")}
 	user2 := User{Name: "StructSearchUser2", Age: 10, Birthday: parseTime("2010-1-1")}
diff --git a/scope.go b/scope.go
index 3fe4675d..cdb772ca 100644
--- a/scope.go
+++ b/scope.go
@@ -606,6 +606,22 @@ func (scope *Scope) buildCondition(clause map[string]interface{}, include bool)
 				replacements = append(replacements, scope.AddToVars(arg))
 			} else if b, ok := arg.([]byte); ok {
 				replacements = append(replacements, scope.AddToVars(b))
+			} else if as, ok := arg.([][]interface{}); ok {
+				var tempMarks []string
+				for _, a := range as {
+					var arrayMarks []string
+					for _, v := range a {
+						arrayMarks = append(arrayMarks, scope.AddToVars(v))
+					}
+
+					if len(arrayMarks) > 0 {
+						tempMarks = append(tempMarks, fmt.Sprintf("(%v)", strings.Join(arrayMarks, ",")))
+					}
+				}
+
+				if len(tempMarks) > 0 {
+					replacements = append(replacements, strings.Join(tempMarks, ","))
+				}
 			} else if values := reflect.ValueOf(arg); values.Len() > 0 {
 				var tempMarks []string
 				for i := 0; i < values.Len(); i++ {