MySQL连接器/C++的64位MySQL Server8.0。我还下载了MySQL连接器/C,然后运行以下命令。 MySql .................................. no 如你所见。他们中没有人知道安装了MySQL。为什么?在这里,我尝试使用MySQL Connector C 6.1 C:\QT\5.12.11\Src\qtbase\src\plugins\sqldrivers>
这就是我想出来的:
SELECT * FROM question as Q LEFT JOIN (SELECT T.tag_name FROM tag as T WHERE T.tag_id IN (SELECT QT.tag_idFROM question_tag AS QT WHERE QT.question_ID = Q.id)) AS QT_T