在join / order mysql中使用where where where

Question

我真的不知道如何在这个SQL查询中使用“Where”条件 我应该使用这样的东西：

  

其中rules_id！= 6
  * rules_id = 6 =＆gt;禁止用户规则

	$stmt = $db_con->prepare("
	select * from users
	JOIN rules
	On users.rules_id = rules.rules_id
	order by rand() limit 1
");

谢谢，抱歉我的英语很差。

Answer 1

只需将其放在order by

之前

$stmt = $db_con->prepare("select * from users
                            JOIN rules On users.rules_id = rules.rules_id
                        where users.rules_id != 6 
                        order by rand() 
                        limit 1");