jackc/pgx · error

cannot scan NULL into *uint64

Error message

cannot scan NULL into *uint64

What it means

Error "cannot scan NULL into *uint64" thrown in jackc/pgx.

Source

Thrown at pgtype/builtin_wrappers.go:207

	if v.Int64 > math.MaxUint32 {
		return fmt.Errorf("%d is greater than maximum value for uint32", v.Int64)
	}
	*w = uint32Wrapper(v.Int64)

	return nil
}

func (w uint32Wrapper) Int64Value() (Int8, error) {
	return Int8{Int64: int64(w), Valid: true}, nil
}

type uint64Wrapper uint64

func (w uint64Wrapper) SkipUnderlyingTypePlan() {}

func (w *uint64Wrapper) ScanInt64(v Int8) error {
	if !v.Valid {
		return fmt.Errorf("cannot scan NULL into *uint64")
	}

	if v.Int64 < 0 {
		return fmt.Errorf("%d is less than minimum value for uint64", v.Int64)
	}

	*w = uint64Wrapper(v.Int64)

	return nil
}

func (w uint64Wrapper) Int64Value() (Int8, error) {
	if uint64(w) > uint64(math.MaxInt64) {
		return Int8{}, fmt.Errorf("%d is greater than maximum value for int64", w)
	}

	return Int8{Int64: int64(w), Valid: true}, nil
}

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgtype/builtin_wrappers.go:207 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/b33f3d6469bafc68.json. Report an issue: GitHub.