ADDCOLUMN`is_topic_message`TINYINT(1)DEFAULT0COMMENT'True, if the message is sent to a forum topic'AFTER`forward_date`,
ADDCOLUMN`message_thread_id`BIGINT(20)NULLDEFAULTNULLCOMMENT'Unique identifier of a message thread to which the message belongs; for supergroups only'AFTER`id`,
ADDCOLUMN`forum_topic_created`TEXTNULLDEFAULTNULLCOMMENT'Service message: forum topic created'AFTER`proximity_alert_triggered`,
ADDCOLUMN`forum_topic_closed`TEXTNULLDEFAULTNULLCOMMENT'Service message: forum topic closed'AFTER`forum_topic_created`,
ADDCOLUMN`forum_topic_reopened`TEXTNULLDEFAULTNULLCOMMENT'Service message: forum topic reopened'AFTER`forum_topic_closed`;
ALTERTABLE`chat`
ADDCOLUMN`is_forum`TINYINT(1)DEFAULT0COMMENT'True, if the supergroup chat is a forum (has topics enabled)'AFTER`last_name`;