我对此查询有疑问：
create temporary table IF NOT EXISTS vt_tmp_u2275(id int(11) primary key) ignore (SELECT 2275 as id) UNION (SELECT vt_user2role.userid AS userid FROM vt_user2role INNER JOIN vt_users ON vt_users.id=vt_user2role.userid INNER JOIN vt_role ON vt_role.roleid=vt_user2role.roleid WHERE vt_role.parentrole like 'H1::H4::H43::H401::H249::H250::H251::H776::H252::H544::H687::H794::H253::H360::H441::H442::%') UNION (SELECT groupid FROM vt_groups where groupid in 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错误： MySQL服务器已消失代码： 2006
代码是2006，所以我发现online它是CR_SERVER_GONE_ERROR。我试图解决此问题，但没有继承...
以下是一些与服务器相关的设置：
MySQL 8.0：
PHP 7.2：
由于调试原因，该值非常高。提示可能是，当我编辑查询并从那里仅删除一个groupid时，错误消失了，一切正常。在不使用应用程序的情况下在管理员中运行查询时，即使不进行编辑，查询也会通过。我正在使用SSL MySQL连接到Azure MySQL服务器8.0.15 /也尝试过MySQL 5.6，同样的麻烦。在本地开发环境上运行此查询时，应用正常运行。作为数据库连接的驱动程序，我正在使用adodb mysqli驱动程序。我还尝试比较本地和Beta服务器上MySQL和PHP的服务器设置，这没有用。现在，我认为麻烦在于与数据库的SSL连接。但是我不知道该搜索什么...请帮助，我现在没有主意...