for len(db.Statement.scopes) > 0 {
		db = db.executeScopes()
	}

	var (
		curTime           = time.Now()
		stmt              = db.Statement
		resetBuildClauses bool
	)

	if len(stmt.BuildClauses) == 0 {
		stmt.BuildClauses = p.Clauses
		resetBuildClauses = true
	}

	if optimizer, ok := stmt.Dest.(StatementModifier); ok {
		optimizer.ModifyStatement(stmt)
	}

	if db.DefaultContextTimeout > 0 {

					defer delete(db.Statement.Clauses, "SET")
					db.Statement.AddClause(set)
				} else {
					return
				}
			}

			db.Statement.Build(db.Statement.BuildClauses...)
		}

		checkMissingWhereConditions(db)

		if !db.DryRun && db.Error == nil {
			if ok, mode := hasReturning(db, supportReturning); ok {

					}
				}
			}

			db.Statement.AddClauseIfNotExists(clause.From{})

			db.Statement.Build(db.Statement.BuildClauses...)
		}

		checkMissingWhereConditions(db)

		if !db.DryRun && db.Error == nil {
			ok, mode := hasReturning(db, supportReturning)
			if !ok {