How to count users? idvisitor, visitorId columns not in log_visit table

Looking at our Matomo 4.6.1 data in Power BI.

I want to create a “nothing fancy” dashboard, where one of the cards will show total visitors for a period. However log_visit table does not have idvisitor or visitorId column for me.

I started with and, then googled and searched this forum before posting.

How can I count users?
Thank you.

Hm, never mind. Now I do see the idvisitor column and it says Binary, but this is another problem. Thank you for your attention and time, all good.

I wish I could remove this post and ask a better question instead.

@Roman_K Please use the flag button the next time as this way I get notified about it immediatly.