'ORA-01009: missing mandatory parameter' during select for CLOB columns on 2.8.13

[stle04]

Hi
I faced with issue

I have a table

CREATE TABLE testclob(
    data1 CLOB,
    data2 CLOB,
    n NUMBER
);

and the code for selecting data from that table

package main

import (
	"context"
	"database/sql"
	"fmt"
	_ "github.com/sijms/go-ora/v2"
	ora "github.com/sijms/go-ora/v2"
)

const url = "oracle://user:pass@localhost:1521/XE"

func main() {
	ctx := context.TODO()

	db, err := sql.Open("oracle", url)
	if err != nil {
		fmt.Println("Can't open database: ", err)
		return
	}
	defer func() {
		err = db.Close()
		if err != nil {
			fmt.Println("Can't close database: ", err)
		}
	}()

	conn, err := db.Conn(ctx)
	if err != nil {
		fmt.Println("Can't open connection: ", err)
		return
	}
	defer func() {
		err = conn.Close()
		if err != nil {
			fmt.Println("Can't close connection: ", err)
		}
	}()

	err = selectTestClob(ctx, conn, 1)
	if err != nil {
		fmt.Println("Can't select: ", err)
	}

	fmt.Println("ok")
}

func selectTestClob(
	ctx context.Context,
	conn *sql.Conn,
	n int,
) (err error) {
	var rows *sql.Rows
	rows, err = conn.QueryContext(
		ctx,
		`
SELECT DATA1, DATA2
FROM testclob
WHERE
  n = :1
`,
		n,
	)
	if err != nil {
		return fmt.Errorf("can't select: %w", err)
	}

	for rows.Next() {
		var data1 sql.NullString
		var data2 sql.NullString
		err = rows.Scan(&data1, &data2)
		fmt.Println("[selectTestClob] ", data1, data2)
	}
	return nil
}

[stle04]

The output of that code is

Can't select:  can't select: ORA-01009: missing mandatory parameter

[sijms]

fixed v2.8.14