[英]Creating new MySQL database with Go using prepared query
我正在嘗試創建新的MySQL數據庫:
package main
import (
"database/sql"
"fmt"
"log"
_ "github.com/go-sql-driver/mysql"
)
func createDBIfNotExists() {
const (
DB_NAME = "new_db"
DB_USER = "root"
DB_PASS = "777"
DB_HOST = "localhost"
DB_PORT = "3306"
)
var dbUrl = fmt.Sprintf("%s:%s@tcp(%s:%s)/", DB_USER, DB_PASS, DB_HOST, DB_PORT)
db, err := sql.Open("mysql", dbUrl)
defer db.Close()
handleError(err)
prepared, err := db.Prepare("CREATE DATABASE IF NOT EXISTS ?")
handleError(err)
_, err = prepared.Exec(DB_NAME)
handleError(err)
}
func main() {
createDBIfNotExists()
}
func handleError(err error) {
if err != nil {
log.Fatal(err)
}
}
但是此代碼返回錯誤:
2017/10/13 12:46:16 Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?' at line 1
如果我更改此代碼並將數據庫名稱連接起來進行查詢:
prepared, err := db.Prepare("CREATE DATABASE IF NOT EXISTS " + DB_NAME)
handleError(err)
_, err = prepared.Exec()
可以,但是我不會有潛在的SQL注入。
我如何准備和執行數據庫創建?
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