New unique userid for new user - Joomla! Forum - community, help and support

so when old user removed user list , new user registers new user old userid.

the problem have several components when user deleted there content left behind untill manually removed. if user registers before items manually removed previous users content shows on new users profile etc.

is there way set each time somone registers new number. there user#1 , user#2 deleted , next new user gets user id#3 not #2.

also know extension or way in can search tables , find items (comments etc.) users not exist anymore.

thanks.

the id column of users table auto incremental. means each new user gets unique id. automatic function design in joomla.

if components not synchronized user component, in other words not have plugin triggered when user deleted, should able use mysql administration utility phpmyadmin run query join list of ids there no corresponding id in users table, i.e. value null.