framework/db/Migration.php
public function dropCommentFromTable($table)
    {
        $time = $this->beginCommand("drop comment from table $table");
        $this->db->createCommand()->dropCommentFromTable($table)->execute();
        $this->endCommand($time);
    }
public function dropCommentFromTable($table)
    {
        $time = $this->beginCommand("drop comment from table $table");
        $this->db->createCommand()->dropCommentFromTable($table)->execute();
        $this->endCommand($time);
    }
Builds a SQL statement for dropping comment from table.

@param string $table the table whose column is to be commented. The table name will be properly quoted by the method.
@since 2.0.8