src/Service/DB/Table.php
public function getColumn($column_name)
    {
        $columns = $this->getColumns();

        return isset($columns[$column_name]) ? $columns[$column_name] : [];
    }
public function getColumn($column_name)
    {
        $columns = $this->getColumns();

        return isset($columns[$column_name]) ? $columns[$column_name] : [];
    }
获得指定字段的信息.

@return array