[Zope] acl_users and sql

[William Herring]

I would like to use the user login from acl_users as a key to search by in
an SQL method.

How do I call the variable of the particular user logged in?

For example, if user 'TestUser' is logged, I want the method to ultimately
look like:

select * from dummytable
where user='TestUser'


How do I do this?  What is the variable for the user in acl_users folder?