db.AddError(field.Set(db.Statement.Context, reflectValue, values[idx]))
		} else { // joinFields count is larger than 2 when using join
			var isNilPtrValue bool
			var relValue reflect.Value
			// does not contain raw dbname
			nestedJoinSchemas := joinFields[idx][:len(joinFields[idx])-1]
			// current reflect value
			currentReflectValue := reflectValue
			fullRels := make([]string, 0, len(nestedJoinSchemas))

// For example, values that can pass this regular expression are:
// - "123"
// - "abc456"
// -"%$#@789"
var regFullDataType = regexp.MustCompile(`\D*(\d+)\D?`)

// TODO:? Create const vars for raw sql queries ?

var _ gorm.Migrator = (*Migrator)(nil)

// Migrator m struct
type Migrator struct {
	Config
}

// Config schema config
type Config struct {
	CreateIndexAfterCreateTable bool

func (db *DB) Group(name string) (tx *DB) {
	tx = db.getInstance()

	fields := strings.FieldsFunc(name, utils.IsValidDBNameChar)
	tx.Statement.AddClause(clause.GroupBy{
		Columns: []clause.Column{{Name: name, Raw: len(fields) != 1}},
	})
	return
}

// Having specify HAVING conditions for GROUP BY
//
//	// Select the sum age of users with name jinzhu

	users := []User{
		{Name: "subquery_raw_1", Age: 10},
		{Name: "subquery_raw_2", Age: 20},
		{Name: "subquery_raw_3", Age: 30},
		{Name: "subquery_raw_4", Age: 40},
	}
	DB.Create(&users)

	var count int64