golang中mysql增删改查实践

package main

import (
    "database/sql"
    "fmt"
    //"time"

    _ "github.com/go-sql-driver/mysql"
)

func checkErr(err error) {
        if err != nil {
                panic(err)
            }
}
func main() {
    db, err := sql.Open("mysql", "root:Hudp-.1234@/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("michael", "系统运营部", "2018-10-30")
    checkErr(err)

    id, err := res.LastInsertId()
    checkErr(err)

    fmt.Println(id)

    //更新数据
    stmt, err = db.Prepare("update userinfo set username=? where uid=?")
    checkErr(err)

    res, err = stmt.Exec("tony",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)

    defer db.Close()

}

参考链接： https://www.golang123.com/book/9?chapterID=165