Go语言读写数据库

import "database/sql"
import _ "github.com/go-sql-driver/mysql" 
db, e := sql.Open("mysql", "user:password@/dbname?charset=utf8")

代码例子：来自 https://github.com/astaxie/build-web-application-with-golang/blob/master/05.2.md 

使用的数据表：

CREATE TABLE `userinfo` (
`uid` int(10) NOT NULL AUTO_INCREMENT,
`username` varchar(64) DEFAULT NULL,
`departname` varchar(64) DEFAULT NULL,
`created` date DEFAULT NULL,
PRIMARY KEY (`uid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=8 ;

代码：

package main

import(

    "database/sql"

    "fmt"

    _"github.com/go-sql-driver/mysql"

)

func main(){

    db,err:=sql.Open("mysql","root:root@tcp(localhost:8889)/ghj1976test?charset=utf8")

    checkErr(err)

    //插入数据

    stmt,err:=db.Prepare("INSERT userinfo SET username=?,departname=?,created=?")

    checkErr(err)

    res,err:=stmt.Exec("ghj1976","RD部门","2013-03-18")

    checkErr(err)

    res,err=stmt.Exec("astaxie","RD部门","2012-12-09")

    checkErr(err)

    id,err:=res.LastInsertId()

    checkErr(err)

    fmt.Println(id)

    //修改数据

    stmt,err=db.Prepare("update user info set username=? where uid=?")

    checkErr(err)

    res,err=stmt.Exec("astaxieupdate",id)

    checkErr(err)

    affect,err:=res.RowsAffected()

    checkErr(err)

    fmt.Println(affect)

    //搜索数据

    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 user info 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{

        panic(err)

    }

}

db.Prepare()函数用来返回准备要执行的sql操作，然后返回准备完毕的执行状态。
db.Query()函数用来直接执行Sql返回Rows结果。
stmt.Exec()函数用来执行stmt准备好的SQL语句