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