gin框架操作数据库mysql

EXEC()方法执行增删改

stmt, err := db.Prepare("insert into user(name,age)values(?,?)")
	if err != nil {
	    log.Println(err)
	}
	
	rs, err := stmt.Exec("go-test", 12)
	if err != nil {
	    log.Println(err)
	}
	//我们可以获得插入的id
	id, err := rs.LastInsertId()
	//可以获得影响行数
	affect, err := rs.RowsAffected()

Query()方法实现查

  var name string
    var age int
    rows, err := db.Query("select name,age from user where id = ? ", 1)
    if err != nil {
        fmt.Println(err)
    }
    defer rows.Close()

    for rows.Next() {
        err := rows.Scan(&name, &age)
        if err != nil {
            fmt.Println(err)
        }
    }

QueryRow()方法查询单条记录

	 err = db.QueryRow("select name from user where id = ?", 222).Scan(&name)

处理空值

	if name.Valid {
    // use name.String
} else {
        // value is NULL
}