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