Hello,

I believe we have the solution for your use case.

We got this add-on Master-Details , which can be used if you wish to first present an initial table with less data/ less columns;

then if a user makes an action you set up,  it can load "more details" only for the selected row

(1. If the “Row click” is selected, users will be able to access details for a row by clicking on it. 

2. If the “Button click” is selected, a new column will be added to the table, where each row would get a button opening the details for it.)

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You an also set up in which way you wish the details to load;

1. It can be as a Pop Up to reveal more columns of that row

2. A template Post with placeholders

3. Or a template custom Wordpress Page with placeholders to load data for more columns of that row.

Please check more about Master Details here, with an example.

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You can also test Master Detail Add-on features on this sandbox site.

Let me know how that seems,

or if you need something different entirely for your use-case?

And i just wanted to point out that you can try wpDataTables before purchasing

 on our sandbox Demo sites ( you can find links for the main plugin Demo,  

as well as add-on Demos, in my signature),

and there is a 15-day money-back guarantee period, 

so if you purchase the plugin, you can safely fully test it out, and if it doesn't fit your needs you can request and receive a refund in that period. ( same goes for all plugins and add-ons)

Let me know if you have any additional questions. 

Thank you.