这样做，代码对它们有注释，您可以阅读并适应您的需求。
package main
import "database/sql"
import "fmt"
import _ "github.com/go-sql-driver/mysql"
type trade_history struct {
// best practice in golang is to name your field in upper camel case if you intend to export it
// or lower camel case if you don't.
id, final_meta_report_id, trading_account_id, lp, lp2, lp3 int
// `type` is reserved keyword, therefore for example, i use `ptype`
symbol, price, price_type, time, ptype, status, created_at, updated_at string
qty, pegged_distance, price_limit double
}
// you don't need to declare global variable like this, if you want it to be accessible to all your packages
// it's best to use struct.
// var db *sql.DB
// var err error -- this one is shadowed by declaration of err in your getTradingHistory anyway.
func getTradingHistory(reportId int) (err error) {
// Your dsn is unquoted hence error
db, err := sql.Open("mysql", "username:password@trade.asdewx134.us-east-2.rds.amazonaws.com:3306/trading_dashboard")
// your trade data is here
defer db.Close()
if err != nil {
fmt.Println(err.Error())
}
err = db.Ping()
if err != nil {
fmt.Println(err.Error())
}
var th trade_history
// this one is also unquoted and your SQL statement is not correct
// here i add `FROM [YOUR TABLE] that you can edit to your needs`
err = db.QueryRow("select id, final_meta_report_id, trading_account_id, symbol, qty, price, price_type, time, lp, lp2, lp3, pegged_distance, price_limit, time_limit, type, status, created_at FROM [YOUR TABLE] WHERE id = ?", reportId).Scan( /* Scan your fields here */ ) // This is where you should scan your fields.
if err != nil {
fmt.Println(err.Error())
}
fmt.Printf("id: %d\n Final_meta_report_id: %d\n trading_account_id: %d\n symbol: %s\n qty: %.2f\n price: %s\n price_type: %s\n time: %s\n lp: %d\n lp2: %d\n lp3: %d\n pegged_distance: %.2f\n pr$")
return err
}
func main() {
getTradingHistory(2074)
}