src/Db/Migration.php
public function addCommentOnTable($table, $comment)
    {
        $cmdPromise = $this->createCommand()->addCommentOnTable($table, $comment)->execute();
        return $this->execPromise($cmdPromise, "add comment on table $table");
    }
public function addCommentOnTable($table, $comment)
    {
        $cmdPromise = $this->createCommand()->addCommentOnTable($table, $comment)->execute();
        return $this->execPromise($cmdPromise, "add comment on table $table");
    }
Builds a SQL statement for adding comment to table.

@param string $table the table to be commented. The table name will be properly quoted by the method.
@param string $comment the text of the comment to be added. The comment will be properly quoted by the method.
@return LazyPromiseInterface