昨天安裝了MySQL Driver, 也做了基本的測試.
今天來看應用.

首先在MySQL 建立一個 ironman1014的Table,為了詳細測試起見,
我們除了char型態以外,還安排了 timestamp, date 型態.

CREATE TABLE ironman1014(
uid SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
name CHAR(10) NOT NULL,
cutime TIMESTAMP NOT NULL DEFAULT NOW(),
tdate DATE NOT NULL,
tdatachr CHAR(12) NOT NULL
);

Golang程式如下:

// hello64
package main

import (
	"database/sql"
	"fmt"
	_ "github.com/go-sql-driver/mysql"
)

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

func main() {
	var uid int
	var name string
	var cutime string
	var tdate string
	var tdatachr string
	// Create Connection
	db, err := sql.Open("mysql", "julia:julia@/julia?charset=utf8")
	checkErr(err)

	// Insert
	stmt, err := db.Prepare("INSERT ironman1014 SET name=?, tdate=?, tdatachr=?")
	checkErr(err)
	res, err := stmt.Exec("bunko", "2014-10-14", "測試資料")
	checkErr(err)
	id, err := res.LastInsertId()
	checkErr(err)
	fmt.Println("Last Insert ID: ", id)
	fmt.Println("Insert Completed!")
	fmt.Println("---------------")

	// Update
	stmt, err = db.Prepare("UPDATE ironman1014 SET name=? WHERE uid=?")
	checkErr(err)
	res, err = stmt.Exec("Bunko", id)
	checkErr(err)
	affect, err := res.RowsAffected()
	checkErr(err)
	fmt.Println("Affect: ", affect)
	fmt.Println("Update Completed!")
	fmt.Println("---------------")

	// Query
	rows, err := db.Query("SELECT uid, name, cutime, DATE_FORMAT(tdate, '%Y-%m-%d'), tdatachr FROM ironman1014")
	checkErr(err)
	for rows.Next() {
		err = rows.Scan(&uid, &name, &cutime, &tdate, &tdatachr)
		checkErr(err)
		fmt.Println(uid)
		fmt.Println(name)
		fmt.Println(cutime)
		fmt.Println(tdate)
		fmt.Println(tdatachr)
		fmt.Println("---------------")
	}

	fmt.Println("Query Completed!")

	// Close Connection
	db.Close()
	fmt.Println("Close Connection and Quit Program!")
}

執行結果:

./hello64 
Last Insert ID:  1
Insert Completed!
---------------
Affect:  1
Update Completed!
---------------
1
Bunko
2014-10-14 21:03:57
2014-10-14
測試資料
---------------
Query Completed!
Close Connection and Quit Program!

順利的 insert, 查詢last insert id, 再根據此id做update,
最後再做select,本例中雖然只insert 一筆,但是意義相同,
並且做適當的資料型態轉換.