package main

import (
 "database/sql"
 "fmt"
 "time"
 _ "github.com/go-sql-driver/mysql"
)

func main() {
 db, err := sql.Open("mysql", "username:password@tcp(1.2.3.4:3306)/dbname")
 if err != nil {
    fmt.Println(err)
    return
 }

  defer db.Close()
  start := time.Now()
  rows, err := db.Query("SELECT count(*) FROM foo")
  if err != nil {
   fmt.Println(err.Error())
   return
  }

  t := time.Now()
  elapsed := t.Sub(start)
  fmt.Println(elapsed)

  var count int64
  for rows.Next() {
    err := rows.Scan(&count)
    if err != nil {
      fmt.Println(err)
      return
    }
    fmt.Printf("count: %d\n", count)
  }
}