go + postgres + pq library

gistfile1.go

package mine

import (
    "fmt"
    _ "github.com/bmizerany/pq"
    "database/sql"
    "testing"
)


func BenchmarkDriver(t *testing.B) {
    t.StopTimer()
    db, err := sql.Open("postgres", "user=pgdev dbname=db_dev password=password sslmode=disable")
    t.StartTimer()
    if err != nil {
        t.Fatal(err)
    }

    _, err = db.Exec("BEGIN")
    if err != nil {
        t.Fatal(err)
    }

    for i := 0; i < 100000; i++ {

        if i % 2 == 0 {
            _, err := db.Exec("INSERT INTO users (user_name, first_name, last_name) VALUES ('go', 'is', 'it')")
            if err != nil {
                t.Fatal(err)
            }
        } else {
            rows, err := db.Query("SELECT user_name, first_name, last_name from users LIMIT 50")
            if err != nil {
                t.Fatal(err)
            }

            for rows.Next() {
                if i == 3 {
                    var user_name string
                    var first_name string
                    var last_name string
                    err = rows.Scan(&user_name, &first_name, &last_name)
                    fmt.Println(user_name, first_name, last_name)
                }
            }

        }
    }
    db.Exec("COMMIT")
    db.Close()
}