jackc/pgx · error

cannot scan NULL into *int8

Error message

cannot scan NULL into *int8

What it means

Error "cannot scan NULL into *int8" thrown in jackc/pgx.

Source

Thrown at pgtype/builtin_wrappers.go:20

import (
	"errors"
	"fmt"
	"math"
	"math/big"
	"net"
	"net/netip"
	"reflect"
	"time"
)

type int8Wrapper int8

func (w int8Wrapper) SkipUnderlyingTypePlan() {}

func (w *int8Wrapper) ScanInt64(v Int8) error {
	if !v.Valid {
		return fmt.Errorf("cannot scan NULL into *int8")
	}

	if v.Int64 < math.MinInt8 {
		return fmt.Errorf("%d is less than minimum value for int8", v.Int64)
	}
	if v.Int64 > math.MaxInt8 {
		return fmt.Errorf("%d is greater than maximum value for int8", v.Int64)
	}
	*w = int8Wrapper(v.Int64)

	return nil
}

func (w int8Wrapper) Int64Value() (Int8, error) {
	return Int8{Int64: int64(w), Valid: true}, nil
}

type int16Wrapper int16

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgtype/builtin_wrappers.go:20 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/a4686e270f349f89.json. Report an issue: GitHub.