type CompositeKeyProduct struct {
		ProductID    int `gorm:"primaryKey;autoIncrement:true;"` // primary key
		LanguageCode int `gorm:"primaryKey;"`                    // primary key
		Code         string
		Name         string
	}

	if err := DB.Migrator().DropTable(&CompositeKeyProduct{}); err != nil {
		t.Fatalf("failed to migrate, got error %v", err)
	}

				}
				if v, ok := columnType.Comment(); !ok || v != "my code2" {
					t.Fatalf("column code comment should be correct, name: %v, column: %#v", columnType.Name(),
						columnType)
				}
			case "code2":
				// Code2 string `gorm:"comment:my code2;default:hello"`
				if v, ok := columnType.DefaultValue(); !ok || v != "hello" {
					t.Fatalf("column code default value should be correct, name: %v, column: %#v, default value: %v",

		if length, ok := columnType.Length(); length != int64(field.Size) {
			if length > 0 && field.Size > 0 {
				alterColumn = true
			} else {
				// has size in data type and not equal
				// Since the following code is frequently called in the for loop, reg optimization is needed here
				matches2 := regFullDataType.FindAllStringSubmatch(fullDataType, -1)
				if !field.PrimaryKey &&

			return strings.Compare(user.Languages[i].Code, user.Languages[j].Code) > 0
		})

		sort.Slice(expect.Languages, func(i, j int) bool {
			return strings.Compare(expect.Languages[i].Code, expect.Languages[j].Code) > 0
		})
		for idx, language := range user.Languages {
			AssertObjEqual(t, language, expect.Languages[idx], "Code", "Name")
		}
	})

	t.Run("Friends", func(t *testing.T) {

			}
		}
	}

	var (
		name     string
		idx      = strings.Index(str, ",")
		settings = ParseTagSetting(str, ",")
	)

	// optimize match english letters and midline
	// The following code is basically called in for.
	// In order to avoid the performance problems caused by repeated compilation of regular expressions,
	// it only needs to be done once outside, so optimization is done here.