ThinkPHP5.2pdosqlite does not support group_concat

Environment for historical reasons. Cannot be changed. It is also a win platform. Good features during development. An error is returned when the statement is sent to the server. Just delete it. But I must use group_concat... what should I do. The TP used is also a historical reason. {Code...} environment for historical reasons.
Cannot be changed. It is also a win platform. Good features during development.
An error is returned when the statement is sent to the server. Just delete it.
But I must use group_concat... what should I do. The TP used is also a historical reason.

'Db _ type' => 'pdo', 'db _ DSN '=> 'sqlite :'. APP_PATH. 'db3. sqlite ', 'db _ prefix' => 'bi _', // database table PREFIX

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Environment for historical reasons.
Cannot be changed. It is also a win platform. Good features during development.
An error is returned when the statement is sent to the server. Just delete it.
But I must use group_concat... what should I do. The TP used is also a historical reason.

'Db _ type' => 'pdo', 'db _ DSN '=> 'sqlite :'. APP_PATH. 'db3. sqlite ', 'db _ prefix' => 'bi _', // database table PREFIX

5.2 officially unavailable. Upgrade php.