golang操作mysql数据库

package main

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

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

func main() {

    db, err := sql.Open("mysql", "root:Admin!1234@tcp(10.99.2.153:3306)/xes_nrcp?charset=utf8")
    defer db.Close()
    checkErr(err)

    //插入数据
    insert(21, db)

    //删除数据
    delete(14, db)

    //更新数据
    update(15, "设计部门", db)

    //查询数据
    get(db)

}

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

func get(db *sql.DB) {
    rows, _ := db.Query("SELECT * FROM aaa_test")
    cloumns, _ := rows.Columns()

    //获取列字段
    for _, cloumn := range cloumns {
        fmt.Print(cloumn + " ")
    }
    fmt.Println()

    //遍历返回结果
    for rows.Next() {
        rows.Scan(&cloumns[0], &cloumns[1], &cloumns[2], &cloumns[3])
        fmt.Println(cloumns[0], cloumns[1], cloumns[2], cloumns[3])
    }
}

func insert(id int, db *sql.DB) {
    //插入数据方式

    stmt, _ := db.Prepare("INSERT aaa_test SET id=?,nameA=?,descA=?")
    res, _ := stmt.Exec(id, "研发部门", "2012-12-09", time.Now())
    resID, _ := res.LastInsertId()
    fmt.Println(resID)

    //or
    // stmt, _ := db.Prepare("INSERT aaa_test (id,nameA,descA,createTime)values (?,?,?,?)")
    // res, _ := stmt.Exec(17, "研发部门", "2012-12-09", time.Now())
    // id, _ := res.LastInsertId()
    // fmt.Println(id)

    //or
    // res, _ := db.Exec("INSERT aaa_test (id,nameA,descA)values (?,?,?)", 18, "研发部门", "2012-12-09")
    // id, _ := res.LastInsertId()
    // fmt.Println(id)

    //or
    // db.Exec("INSERT aaa_test (id,nameA,descA,createTime)values (?,?,?,?)", 14, "qwe", "2012-12-09", time.Now())

    //or
    //db.Exec("INSERT aaa_test SET id=?,nameA=?,descA=?,createTime=?", id, "研发部门", "写写代码", time.Now())

}

func delete(id int, db *sql.DB) {
    stmt, err := db.Prepare("delete from aaa_test where id=?")
    checkErr(err)

    res, err := stmt.Exec(id)
    checkErr(err)

    affect, err := res.RowsAffected()
    checkErr(err)
    fmt.Println("删除数据影响行数：" + strconv.FormatInt(affect, 10))

}

func update(id int, name string, db *sql.DB) {
    stmt, err := db.Prepare("update aaa_test set nameA=? where id=?")
    checkErr(err)

    res, err := stmt.Exec(name, id)
    checkErr(err)

    affect, err := res.RowsAffected()
    checkErr(err)

    fmt.Println(affect)
}