package main

import (
	"database/sql"
	"fmt"
	"log"

	_ "github.com/lib/pq"
)

func main() {
	const dsn = "user=user_YrK4j7 password=password_jSDm76 host=43.248.3.21 port=5432 dbname=bl sslmode=disable timezone=Asia/Shanghai"

	db, err := sql.Open("postgres", dsn)
	if err != nil {
		log.Fatal(err)
	}
	defer db.Close()

	var (
		id                  int64
		cdkCode             string
		cdkType             int64
		exchangeRemainCount int64
		bindUserID          int64
		validEndTime        sql.NullTime
		remark              sql.NullString
	)

	err = db.QueryRow(`
		select id, cdk_code, type, exchange_remain_count, bind_user_id, valid_end_time, remark
		from config_gift_cdk
		where cdk_code = $1
	`, "nrTbdXFBhKkaTdDk").Scan(
		&id,
		&cdkCode,
		&cdkType,
		&exchangeRemainCount,
		&bindUserID,
		&validEndTime,
		&remark,
	)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("id=%d\ncdk_code=%s\ntype=%d\nexchange_remain_count=%d\nbind_user_id=%d\nvalid_end_time=%v\nremark=%q\n",
		id,
		cdkCode,
		cdkType,
		exchangeRemainCount,
		bindUserID,
		validEndTime.Time,
		remark.String,
	)
}