go web 第三天 学习笔记 --mysql

CREATE TABLE `userinfo` (
    `uid` INT() NOT NULL AUTO_INCREMENT,
    `username` VARCHAR() NULL DEFAULT NULL,
    `departname` VARCHAR() NULL DEFAULT NULL,
    `created` DATE NULL DEFAULT NULL,
    PRIMARY KEY (`uid`)
)

CREATE TABLE `userdetail` (
    `uid` INT() NOT NULL DEFAULT '',
    `intro` TEXT NULL,
    `profile` TEXT NULL,
    PRIMARY KEY (`uid`)
)

https://github.com/Go-SQL-Driver/MySQL

package main

import (
    "database/sql"
    "fmt"
    _ "github.com/Go-Sql-Driver/MySql"
    "log"
    "time"
)

func main() {
    db, err := sql.Open("mysql", "root:123456@tcp(localhost:3306)/test?charset=utf8")
    checkErr(err)
    //插入数据
    stmt, err := db.Prepare("insert userinfo set username=?,departname=?,created=?")
    checkErr(err)
    res, err := stmt.Exec("nilz", "研发部门", time.Now())
    checkErr(err)
    id, err := res.LastInsertId()
    checkErr(err)
    fmt.Println("id:", id)
    //更新数据
    stmt, err = db.Prepare("update userinfo set username=? where uid=?")
    checkErr(err)
    res, err = stmt.Exec("nilzupdate", id)
    checkErr(err)
    affect, err := res.RowsAffected()
    checkErr(err)
    fmt.Println(affect)

    //查询数据
    rows, err := db.Query("select * from userinfo")
    checkErr(err)
    for rows.Next() {
        var uid int
        var username string
        var department string
        var created string
        err = rows.Scan(&uid, &username, &department, &created)
        checkErr(err)
        fmt.Println(uid)
        fmt.Println(username)
        fmt.Println(department)
        fmt.Println(created)
    }
    //删除数据
    stmt, err = db.Prepare("delete from userinfo where uid=?")
    checkErr(err)
    res, err = stmt.Exec(id)
    checkErr(err)
    affect, err = res.RowsAffected()
    checkErr(err)
    fmt.Println(affect)
    db.Close()
}
func checkErr(err error) {
    if err != nil {
        fmt.Println(err)
        log.Fatal(err)
    }
}

这里的github.com/Go-Sql-Driver/MySql是cmd go get github.com/Go-Sql-Driver/MySql到gopath中的  首先需要安装git

执行结果