func (b *Reader) ReadString(delim byte) (string, error) {
	full, frag, n, err := b.collectFragments(delim)
	// Allocate new buffer to hold the full pieces and the fragment.
	var buf strings.Builder
	buf.Grow(n)
	// Copy full pieces and fragment in.
	for _, fb := range full {
		buf.Write(fb)
	}
	buf.Write(frag)
	return buf.String(), err
}

// WriteTo implements io.WriterTo.

// dropped from the byte slice with no replacement. The characters in s and the
// output are interpreted as UTF-8-encoded code points.
func Map(mapping func(r rune) rune, s []byte) []byte {
	// In the worst case, the slice can grow when mapped, making
	// things unpleasant. But it's so rare we barge in assuming it's
	// fine. It could also shrink but that falls out naturally.
	b := make([]byte, 0, len(s))
	for i := 0; i < len(s); {

	var data []T
	return g.g.apply(ctx).FindInBatches(&data, batchSize, func(tx *DB, batch int) error {
		return fc(data, batch)
	}).Error
}

func (g execG[T]) Row(ctx context.Context) *sql.Row {
	return g.g.apply(ctx).Row()
}

func (g execG[T]) Rows(ctx context.Context) (*sql.Rows, error) {
	return g.g.apply(ctx).Rows()

	if err := gorm.G[User](DB).Create(ctx, &user); err != nil {
		t.Fatalf("Create failed: %v", err)
	}

	row := gorm.G[User](DB).Raw("SELECT name FROM ? WHERE id = ?", clause.Table{Name: clause.CurrentTable}, user.ID).Row(ctx)
	var name string
	if err := row.Scan(&name); err != nil {
		t.Fatalf("Row scan failed: %v", err)
	}
	if name != user.Name {
		t.Errorf("expected %s, got %s", user.Name, name)
	}