While I do agree with `block_id` which already known, `ts_visible` and `ts_hidden` are not, and I need them to build block `Item` objects. So I guess we can keep `*` here. Furthermore, the query is ported as is from [`eZFlowPool`](https://github.com/ezsystems/ezflow/blob/master/packages/ezflow_extension/ezextension/ezflow/classes/ezflowpool.php#L48)