Hi, Patrick 

My sincere apologies,  i have somehow misread the beginning of your ticket and it seemed that you mentioned tables linked to Gravity Forms, so i sent a reply about that, you got an Email with this reply.

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I have deleted it here, and it seems i did not correctly understand your use-case,

but i will elaborate about generally prefiltering tables per logged in user.

If i understood your use-case correctly, your goal is to predefine a filter that will only show rows associated with the currently logged user?

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There can be different ways to achieve predefined filters for our tables by currently logged user.

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You can use placeholders for table generation.

1. For example, if you have a MySQL query-based table, and if you have  a column that stores user's logins,

you can use this query:

SELECT * FROM yourDatabaseTable
WHERE columnName = '%CURRENT_USER_LOGIN%'

%VAR1% can be defined in the Placeholders tab when you're creating a table, 

then you can have multiple SQL Query-based tables that each have a different value filtered of that column.

2. 

Or, you can use a predefined placeholder as filtering value in a Column's settings.

If you have a column that stores currently logged user values,

you can set filter type as Text, and use predefined filter value as %CURRENT_USER_LOGIN% :

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But, i am not sure i understood your use-case, it seems it might be more complex than this if you need to pass this as a VAR in the shortcode,

 and i don't know which table type you are using, as well.

Could you elaborate a bit more about this use-case?

Thank you