You are correct in that this is needed and is a much requested feature.

I don’t think this should be in a shortcode though. I have intended to add this to the admin backend for some time now, but I never seem to be able to find the time to implement it.

If it’s any help, you can easily search the DB table (wp_wallets_txs) directly from phpMyAdmin or an SQL console. I know that this is not ideal. I will try to implement search in the admin transactions list soon.

You won’t.

WP_Query is for retrieving pages, posts and custom post types. These all reside in the wp_posts table.

Transactions are stored in a custom table, wp_wallets_txs. Exchange trades are stored in wp_wallets_trades. This requires custom work with the $wpdb object.

The bulk of the work is integrating with the subclasses of WP_List_Table and constructing the SQL query dynamically. This all requires custom code.

I have added tickets to my backlog to add search to the transactions query, and to create a new WP_List_Table admin page for trades, which will then need their own search queries.

This is why these tickets have been sitting on my backlog since 2018, it’s a considerable amount of work and I’m always too busy. I will try to get this done soon, though.

with regards