//	db.Where("name = ?", "jinzhu").First(&user)
//	// Find the first user with name jinzhu and age 20
//	db.Where(&User{Name: "jinzhu", Age: 20}).First(&user)
//	// Find the first user with name jinzhu and age not equal to 20
//	db.Where("name = ?", "jinzhu").Where("age <> ?", "20").First(&user)
//
// [docs]: https://gorm.io/docs/query.html#Conditions
func (db *DB) Where(query interface{}, args ...interface{}) (tx *DB) {

	if !isSameType {
		// check size
		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 &&

	var qs []QueryResetNullValue
	err = DB.Joins("Item1").Joins("Item2").Find(&qs).Error
	if err != nil {
		t.Errorf("failed to find:%v", err)
	}

	if len(qs) != 2 {
		t.Fatalf("find count not equal:%d", len(qs))
	}

	AssertEqual(t, q1, qs[0])
	AssertEqual(t, q2, qs[1])
}

func TestQueryError(t *testing.T) {
	type P struct{}
	var p1 P
	err := DB.Take(&p1, 1).Error

			t.Fatalf("Should find saved record")
		}

		return errors.New("the error message")
	})

	if err != nil && err.Error() != "the error message" {
		t.Fatalf("Transaction return error will equal the block returns error")
	}

	if err := DB.First(&User{}, "name = ?", "transaction-block").Error; err == nil {
		t.Fatalf("Should not find record after rollback")
	}

	// commit