Add dummy SQL code

sevenkeys/go.mod

@@ -0,0 +1,8 @@
+module main
+
+go 1.22.1
+
+require (
+	filippo.io/edwards25519 v1.1.0 // indirect
+	github.com/go-sql-driver/mysql v1.8.1 // indirect
+)

sevenkeys/go.sum

@@ -0,0 +1,4 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
+filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
+github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=

sevenkeys/main.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+
+	"github.com/go-sql-driver/mysql"
+)
+
+type Product struct {
+	Name      string
+	Price     float64
+	Available bool
+}
+
+var db *sql.DB
+
+func main() {
+	connectionConfig := mysql.Config{
+		User:                 "root",
+		Passwd:               "o7MS6CIn660jIApSP",
+		Net:                  "tcp",
+		Addr:                 "127.0.0.1:3306",
+		DBName:               "goql",
+		AllowNativePasswords: true,
+	}
+
+	var err error
+
+	db, err := sql.Open("mysql", connectionConfig.FormatDSN())
+	defer db.Close()
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if err = db.Ping(); err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("Connected!")
+
+	createProductTable(db)
+
+	insertProduct(db, Product{Name: "Book 1", Price: 15.95, Available: true})
+	insertProduct(db, Product{Name: "Book 2", Price: 15.95, Available: true})
+	insertProduct(db, Product{Name: "Book 3", Price: 15.95, Available: true})
+	insertProduct(db, Product{Name: "Book 4", Price: 15.95, Available: true})
+	insertProduct(db, Product{Name: "Book 5", Price: 15.95, Available: true})
+
+	products := getAllProducts(db)
+
+	fmt.Println(products)
+}
+
+func createProductTable(db *sql.DB) {
+	query := `CREATE TABLE IF NOT EXISTS Product (
+		Id SERIAL PRIMARY KEY,
+		Name VARCHAR(100) NOT NULL,
+		Price NUMERIC(6,2) NOT NULL,
+		Available BOOLEAN,
+		Created TIMESTAMP DEFAULT NOW()
+	)`
+
+	_, err := db.Exec(query)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func insertProduct(db *sql.DB, product Product) {
+	query := "INSERT INTO Product (Name, Price, Available) VALUES ($1, $2, $3);"
+
+	db.QueryRow(query, product.Name, product.Price, product.Available)
+}
+
+func getAllProducts(db *sql.DB) []Product {
+	products := []Product{}
+
+	rows, err := db.Query("SELECT Name, Price, Available FROM Product;")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer rows.Close()
+
+	var name string
+	var price float64
+	var available bool
+	for rows.Next() {
+		err := rows.Scan(&name, &price, &available)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		products = append(products, Product{name, price, available})
+	}
+
+	return products
+}