if strings.Contains(name, " ") || strings.Contains(name, "`") || len(args) > 0 {
		tx.Statement.TableExpr = &clause.Expr{SQL: name, Vars: args}
		if results := tableRegexp.FindStringSubmatch(name); len(results) == 3 {
			if results[1] != "" {
				tx.Statement.Table = results[1]
			} else {
				tx.Statement.Table = results[2]
			}
		}
	} else if tables := strings.Split(name, "."); len(tables) == 2 {

			}
		} else {
			buf.WriteRune(v)
		}

		lastCase = curCase
		curCase = nextCase
	}

	if curCase {
		if !lastCase && len(value) > 1 {
			buf.WriteByte('_')
		}
		buf.WriteByte(value[len(value)-1] + 32)
	} else {
		buf.WriteByte(value[len(value)-1])
	}
	ret := buf.String()
	return ret
}

func (ns NamingStrategy) toSchemaName(name string) string {

// FileWithLineNum return the file name and line number of the current file
func FileWithLineNum() string {
	pcs := [13]uintptr{}
	// the third caller usually from gorm internal
	len := runtime.Callers(3, pcs[:])
	frames := runtime.CallersFrames(pcs[:len])
	for i := 0; i < len; i++ {
		// second return value is "more", not "ok"
		frame, _ := frames.Next()
		if (!strings.HasPrefix(frame.File, gormSourceDir) ||

	userSchema, err := schema.Parse(&CreatedUser{}, &sync.Map{}, schema.NamingStrategy{})
	if err != nil {
		t.Fatalf("failed to parse schema, got error %v", err)
	}

	if len(userSchema.Relationships.Relations) != 1 {
		t.Fatalf("expects 1 relations, but got %v", len(userSchema.Relationships.Relations))
	}

	if createdByRel, ok := userSchema.Relationships.Relations["CreatedBy"]; ok {
		if createdByRel.FieldSchema != userSchema {

			if v == '?' {
				if len(vars) > idx {
					newSQL.WriteString(vars[idx])
					idx++
					continue
				}
			}
			newSQL.WriteByte(v)
		}

		sql = newSQL.String()
	} else {
		sql = numericPlaceholder.ReplaceAllString(sql, "$$$1$$")

		sql = numericPlaceholderRe.ReplaceAllStringFunc(sql, func(v string) string {
			num := v[1 : len(v)-1]
			n, _ := strconv.Atoi(num)

	}

	expects := []User{
		{Name: "distinct", Age: 20},
		{Name: "distinct", Age: 18},
		{Name: "distinct-2", Age: 18},
		{Name: "distinct-3", Age: 18},
	}

	if len(results) != 4 {
		t.Fatalf("invalid results length found, expects: %v, got %v", len(expects), len(results))
	}

	for idx, expect := range expects {
		AssertObjEqual(t, results[idx], expect, "Name", "Age")
	}

	var count int64

			} else {
				callMethod(v, "Register", c.name, c.h)
			}

			if e, ok := v.(error); !ok || e != nil {
				err = e
			}
		}

		if len(data.err) > 0 && err == nil {
			t.Errorf("callbacks tests #%v should got error %v, but not", idx+1, data.err)
		} else if len(data.err) == 0 && err != nil {
			t.Errorf("callbacks tests #%v should not got error, but got %v", idx+1, err)
		}

	} else if len(langs2) != 3 {
		t.Errorf("should only find only 3 languages, but got %+v", langs2)
	}

	DB.Clauses(clause.OnConflict{DoNothing: true}).Create(&langs)
	var langs3 []Language
	if err := DB.Find(&langs3, "code LIKE ?", "upsert-slice%").Error; err != nil {
		t.Errorf("no error should happen when find languages with code, but got %v", err)
	} else if len(langs3) != 3 {

					return
				}
			case schema.Many2Many:
				var (
					queryConds     = make([]clause.Expression, 0, len(rel.References))
					foreignFields  = make([]*schema.Field, 0, len(rel.References))
					relForeignKeys = make([]string, 0, len(rel.References))
					modelValue     = reflect.New(rel.JoinTable.ModelType).Interface()
					table          = rel.JoinTable.Table

				for _, c := range db.Statement.Schema.CreateClauses {
					db.Statement.AddClause(c)
				}
			}

			if supportReturning && len(db.Statement.Schema.FieldsWithDefaultDBValue) > 0 {
				if _, ok := db.Statement.Clauses["RETURNING"]; !ok {
					fromColumns := make([]clause.Column, 0, len(db.Statement.Schema.FieldsWithDefaultDBValue))
					for _, field := range db.Statement.Schema.FieldsWithDefaultDBValue {