stmt.AddError(field.Set(stmt.Context, stmt.ReflectValue, curTime))
						values.Values[0][idx], _ = field.ValueOf(stmt.Context, stmt.ReflectValue)
					}
				} else if field.AutoUpdateTime > 0 && updateTrackTime {
					stmt.AddError(field.Set(stmt.Context, stmt.ReflectValue, curTime))
					values.Values[0][idx], _ = field.ValueOf(stmt.Context, stmt.ReflectValue)
				}
			}

	stmt := &gorm.Statement{DB: m.DB}
	if m.DB.Statement != nil {
		stmt.Table = m.DB.Statement.Table
		stmt.TableExpr = m.DB.Statement.TableExpr
	}

	if table, ok := value.(string); ok {
		stmt.Table = table
	} else if err := stmt.ParseWithSpecialTableName(value, stmt.Table); err != nil {
		return err
	}

	return fc(stmt)
}

// DataTypeOf return field's db data type

	sql = DB.Dialector.Explain(stmt.SQL.String(), stmt.Vars...)
	if !regexp.MustCompile(`.*age.*=10241024,`).MatchString(sql) {
		t.Errorf("Failed to generate sql, got %v", sql)
	}

	stmt = dryRunDB.Model(&user).Where("id = ?", 1).Updates(map[string]interface{}{"age": ageBool(false)}).Statement
	sql = DB.Dialector.Explain(stmt.SQL.String(), stmt.Vars...)
	if !regexp.MustCompile(`.*age.*=false,`).MatchString(sql) {

		t.Errorf("insert with sql.Expr, but got %v", stmt.SQL.String())
	}

	if !reflect.DeepEqual([]interface{}{"jinzhu", "POINT(100 100)"}, stmt.Vars) {
		t.Errorf("generated vars is not equal, got %v", stmt.Vars)
	}

	stmt = dryRunDB.Model(UserWithPoint{}).Create(map[string]interface{}{
		"Name":  "jinzhu",
		"Point": clause.Expr{SQL: "ST_PointFromText(?)", Vars: []interface{}{"POINT(100 100)"}},

			stmt.Table = tables[1]
			return
		}

		stmt.Table = stmt.Schema.Table
	}
	return err
}

func (stmt *Statement) clone() *Statement {
	newStmt := &Statement{
		TableExpr:            stmt.TableExpr,
		Table:                stmt.Table,
		Model:                stmt.Model,
		Unscoped:             stmt.Unscoped,
		Dest:                 stmt.Dest,
		ReflectValue:         stmt.ReflectValue,

	var (
		tx                      = db.getInstance()
		stmt                    = tx.Statement
		modelSchema, joinSchema *schema.Schema
	)

	err := stmt.Parse(model)
	if err != nil {
		return err
	}
	modelSchema = stmt.Schema

	err = stmt.Parse(joinTable)
	if err != nil {
		return err
	}
	joinSchema = stmt.Schema

	relation, ok := modelSchema.Relationships.Relations[field]

				}
			}

			if queryFields {
				stmt := gorm.Statement{DB: db}
				// smaller struct
				if err := stmt.Parse(db.Statement.Dest); err == nil && (db.QueryFields || stmt.Schema.ModelType != db.Statement.Schema.ModelType) {
					clauseSelect.Columns = make([]clause.Column, len(stmt.Schema.DBNames))

					for idx, dbName := range stmt.Schema.DBNames {

	if !regexp.MustCompile("SELECT .* FROM .users. left join pets.*join accounts.*").MatchString(stmt.SQL.String()) {
		t.Errorf("joins should be ordered, but got %v", stmt.SQL.String())
	}

	iv := DB.Table(`table_invoices`).Select(`seller, SUM(total) as total, SUM(paid) as paid, SUM(balance) as balance`).Group(`seller`)

		t.Skip("skip sqlite, sqlserver due to it doesn't support multiple primary keys with auto increment")
	}

	if name := DB.Dialector.Name(); name == "postgres" {
		stmt := gorm.Statement{DB: DB}
		stmt.Parse(&Blog{})
		stmt.Schema.LookUpField("ID").Unique = true
		stmt.Parse(&Tag{})
		stmt.Schema.LookUpField("ID").Unique = true
		// postgers only allow unique constraint matching given keys
	}

pkg database/sql, method (*Stmt) QueryContext(context.Context, ...interface{}) (*Rows, error)
pkg database/sql, method (*Stmt) QueryRowContext(context.Context, ...interface{}) *Row
pkg database/sql, method (*Tx) ExecContext(context.Context, string, ...interface{}) (Result, error)
pkg database/sql, method (*Tx) PrepareContext(context.Context, string) (*Stmt, error)
pkg database/sql, method (*Tx) QueryContext(context.Context, string, ...interface{}) (*Rows, error)