new exporter version

testing/go-code-samples/database-sql-package-goproject/insert/insert.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/go-sql-driver/mysql"
+)
+
+var db *sql.DB
+
+type Album struct {
+	ID       int64
+	Title    string
+	Artist   string
+	Price    float32
+	Quantity int64
+}
+
+func main() {
+	// Capture connection properties.
+	cfg := mysql.Config{
+		User:   os.Getenv("DBUSER"),
+		Passwd: os.Getenv("DBPASS"),
+		Net:    "tcp",
+		Addr:   "127.0.0.1:3306",
+		DBName: "recordings",
+	}
+	// Get a database handle.
+	var err error
+	db, err = sql.Open("mysql", cfg.FormatDSN())
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	pingErr := db.Ping()
+	if pingErr != nil {
+		log.Fatal(pingErr)
+	}
+	fmt.Println("Connected!")
+
+	albID, err := addAlbum(Album{
+		Title:    "The Modern Sound of Betty Carter",
+		Artist:   "Betty Carter",
+		Price:    49.99,
+		Quantity: 10,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("ID of added album: %v\n", albID)
+}
+
+// addAlbum adds the specified album to the database,
+// returning the album ID of the new entry
+func addAlbum(alb Album) (int64, error) {
+	result, err := db.Exec("INSERT INTO album (title, artist, price, quantity) VALUES (?, ?, ?, ?)", alb.Title, alb.Artist, alb.Price, alb.Quantity)
+	if err != nil {
+		return 0, fmt.Errorf("addAlbum: %v", err)
+	}
+	id, err := result.LastInsertId()
+	if err != nil {
+		return 0, fmt.Errorf("addAlbum: %v", err)
+	}
+	return id, nil
+}