Guys,
I would like a filtering to occurs in background on some SQL records before they have to be displayed in the front-end.
Today as far as I understand the filtering is realized by the FE or BE user with ranges search.. etc.
1 => Is there a way to do that directly from the interface ?
2 => Otherwise where the best place in code to do so ?

A simple example would be to return records matching the actual Joomla user from a table where all joomla users have records.