consoleAppwithDB.go

package main

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

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

	sqlStmt := ` 	CREATE TABLE 'userinfo' ( ` +
		`'uid' INTEGER PRIMARY KEY AUTOINCREMENT, ` +
		` 'username' VARCHAR(64) NULL, ` +
		` 'departname' VARCHAR(64) NULL,` +
		` 'created' DATE NULL );
	`
	_, err = db.Exec(sqlStmt)

	if err != nil {
		log.Printf("%q\n", err)
	}

	for {
		// insert
		stmt, err := db.Prepare("INSERT INTO userinfo(username, departname, created) values(?,?,?)")
		checkErr(err)

		fmt.Println("\nEnter User Name: ")
		var value string
		fmt.Scanln(&value)
		if value == "X" {
			return
		}
		origName := value

		fmt.Println("Enter Department: ")
		fmt.Scanln(&value)
		origDepartment := value

		stmt.Exec(origName, origDepartment, time.Now())

		// query
		rows, err := db.Query("SELECT * FROM userinfo")
		checkErr(err)

		fmt.Println("ID\t\tUsername\t\tDepartment\t\tCreation Time")
		for rows.Next() {
			var uid int
			var username string
			var department string
			var created string
			err = rows.Scan(&uid, &username, &department, &created)
			checkErr(err)
			fmt.Printf("%d\t\t%s\t\t%s\t\t%s\n", uid, username, department, created)
		}
	}
	db.Close()

}

func checkErr(err error) {
	if err != nil {
		log.Fatal(err)
		panic(err)
	}
}