You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.go
    path of file: ./repos/build-web-application-with-golang/de/code/src/apps/ch.5.3
    
    the code of the file until where you have to start completion: // Example code for Chapter 5.3 from "Build Web Application with Golang"
// Purpose: Shows how to run simple CRUD operations using a sqlite driver
package main

import (
	"database/sql"
	"fmt"
	_ "github.com/mattn/go-sqlite3"
	"time"
)

const DB_PATH = "./foo.db"

func main() {
	db, err := sql.Open("sqlite3", DB_PATH)
	checkErr(err)
	defer db.Close()

	fmt.Println("Inserting")
	stmt, err := db.Prepare("INSERT INTO userinfo(username, department, created) values(?,?,?)")
	checkErr(err)

	res, err := stmt.Exec("astaxie", "software developement", time.Now().Format("2006-01-02"))
	checkErr(err)

	id, err := res.LastInsertId()
	c
    
func main() {
	db, err := sql.Open("sqlite3", DB_PATH)
	checkErr(err)
	defer db.Close()

	fmt.Println("Inserting")
	stmt, err := db.Prepare("INSERT INTO userinfo(username, department, created) values(?,?,?)")
	checkErr(err)

	res, err := stmt.Exec("astaxie", "software developement", time.Now().Format("2006-01-02"))
	checkErr(err)

	id, err := res.LastInsertId()
	checkErr(err)

	fmt.Println("id of last inserted row =", id)
	fmt.Println("Updating")
	stmt, err = db.Prepare("update userinfo set username=? where uid=?")
	checkErr(err)

	res, err = stmt.Exec("astaxieupdate", id)
	checkErr(err)

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

	fmt.Println(affect, "row(s) changed")

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

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

	fmt.Println("Deleting")
	stmt, err = db.Prepare("delete from userinfo where uid=?")
	checkErr(err)

	res, err = stmt.Exec(id)
	checkErr(err)

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

	fmt.Println(affect, "row(s) changed")
}