tp5中使用原生sql语句

query 用于查询 其他的用execute
插入记录

$result = Db::execute('insert into sb_ad (ad_name, ad_content ,status) values (1, "456",1)');
dump($result);   
更新记录
$result = Db::execute('update sb_ad set ad_name = "framework" where ad_id = 1 ');
dump($result);        
查询数据
$result = Db::query('select * from sb_ad where ad_id = 1');
 print_r($result);
删除数据
$result = Db::execute('delete from sb_ad where ad_id = 2 ');
dump($result);