MS Access: find rows with different fields in from two tables : In MS Access:

I am trying to compare two tables with:
- TABLE1.docnumb1 = TABLE2.docnumb2
- looking for: TABLE1.sum <> TABLE2.sum2

But query retrieves an error: syntax error in from clause (or when creating left join I get an error that JOIN isn't supported):

SELECT docnumb1, sum FROM Table1
JOIN Table2 ON docnumb1 = docnumb2;

How do I query the rows with different values?

[example][1]


  [1]: https://i.stack.imgur.com/3O0Ae.png