jackc/pgx · error

cannot get param %d: %w

Error message

cannot get param %d: %w

What it means

Error "cannot get param %d: %w" thrown in jackc/pgx.

Source

Thrown at pgproto3/bind.go:219

		DestinationPortal    string
		PreparedStatement    string
		ParameterFormatCodes []int16
		Parameters           []map[string]string
		ResultFormatCodes    []int16
	}
	err := json.Unmarshal(data, &msg)
	if err != nil {
		return err
	}
	dst.DestinationPortal = msg.DestinationPortal
	dst.PreparedStatement = msg.PreparedStatement
	dst.ParameterFormatCodes = msg.ParameterFormatCodes
	dst.Parameters = make([][]byte, len(msg.Parameters))
	dst.ResultFormatCodes = msg.ResultFormatCodes
	for n, parameter := range msg.Parameters {
		dst.Parameters[n], err = getValueFromJSON(parameter)
		if err != nil {
			return fmt.Errorf("cannot get param %d: %w", n, err)
		}
	}
	return nil
}

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgproto3/bind.go:219 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/315142f2801c3a11.json. Report an issue: GitHub.