golang操做mysql數據庫mysql
代碼: mysql的增、刪、改、查git
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) //插入數據 insert(21, db) //刪除數據 delete(14, db) //更新數據 update(15, "設計部門", db) //查詢數據 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() //獲取列字段 for _, cloumn := range cloumns { fmt.Print(cloumn + " ") } fmt.Println() //遍歷返回結果 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) { //插入數據方式 stmt, _ := db.Prepare("INSERT aaa_test SET id=?,nameA=?,descA=?") res, _ := stmt.Exec(id, "研發部門", "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, "研發部門", "2012-12-09", time.Now()) // id, _ := res.LastInsertId() // fmt.Println(id) //or // res, _ := db.Exec("INSERT aaa_test (id,nameA,descA)values (?,?,?)", 18, "研發部門", "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, "研發部門", "寫寫代碼", 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("刪除數據影響行數:" + 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) }
sql.Open()函數用來打開一個註冊過的數據庫驅動,go-sql-driver中註冊了mysql這個數據庫驅動,第二個參數是DSN(Data Source Name),它是go-sql-driver定義的一些數據庫連接和配置信息。它支持以下格式:github
user@unix(/path/to/socket)/dbname?charset=utf8 user:password@tcp(localhost:5555)/dbname?charset=utf8 user:password@/dbname user:password@tcp([de:ad:be:ef::ca:fe]:80)/dbname
db.Prepare()函數用來返回準備要執行的sql操做,而後返回準備完畢的執行狀態。golang
db.Query()函數用來直接執行Sql返回Rows結果。sql
stmt.Exec()函數用來執行stmt準備好的SQL語句數據庫
咱們能夠看到咱們傳入的參數都是=?對應的數據,這樣作的方式能夠必定程度上防止SQL注入。socket