package main

    import (
        "database/sql"
        "fmt"
        _ "github.com/lib/pq"
        //"time"
    )

    const (
        //DB_USER     = "postgres"
        //DB_PASSWORD = "postgres"
        //DB_NAME     = "test"
        DB_USER     = "odiseas"
        DB_PASSWORD = "toumpacity"
        DB_NAME     = "mytestdb"
    )

    func main() {
        dbinfo := fmt.Sprintf("user=%s password=%s dbname=%s sslmode=disable",
            DB_USER, DB_PASSWORD, DB_NAME)
        db, err := sql.Open("postgres", dbinfo)
        checkErr(err)
        defer db.Close()

        //fmt.Println("# Inserting values")

        //var lastInsertId int
        //err = db.QueryRow("INSERT INTO userinfo(username,departname,created) VALUES($1,$2,$3) returning uid;", "astaxie", "研发部门", "2012-12-09").Scan(&lastInsertId)
        //checkErr(err)
        //fmt.Println("last inserted id =", lastInsertId)

        //fmt.Println("# Updating")
        //stmt, err := db.Prepare("update userinfo set username=$1 where uid=$2")
        //checkErr(err)

        //res, err := stmt.Exec("astaxieupdate", lastInsertId)
        //checkErr(err)

        //affect, err := res.RowsAffected()
        //checkErr(err)

        //fmt.Println(affect, "rows changed")

        //fmt.Println("# Querying")
        //rows, err := db.Query("SELECT * FROM userinfo")
        //checkErr(err)

        //for rows.Next() {
            //var uid int
            //var username string
            //var department string
            //var created time.Time
            //err = rows.Scan(&uid, &username, &department, &created)
            //checkErr(err)
            //fmt.Println("uid | username | department | created ")
            //fmt.Printf("%3v | %8v | %6v | %6v\n", uid, username, department, created)
        //}

        //fmt.Println("# Deleting")
        //stmt, err = db.Prepare("delete from userinfo where uid=$1")
        //checkErr(err)

        //res, err = stmt.Exec(lastInsertId)
        //checkErr(err)

        //affect, err = res.RowsAffected()
        //checkErr(err)

        //fmt.Println(affect, "rows changed")
    }

    func checkErr(err error) {
        if err != nil {
            fmt.Println("Something went wrong!!")
            panic(err)
        }
    }