Description of problem:
DDL for tables Customer and Orders in VDB as follows:
CREATE FOREIGN TABLE Customers (
  id integer PRIMARY KEY OPTIONS (NAMEINSOURCE 'id'),
  name varchar(10)) OPTIONS (NAMEINSOURCE 'DB.PUBLIC.CUSTOMERS');
CREATE FOREIGN TABLE Orders (
  id integer PRIMARY KEY OPTIONS (NAMEINSOURCE 'id'),
  customerid integer,
  place varchar(10),
  FOREIGN KEY (customerid) REFERENCES Customers(id)) OPTIONS (NAMEINSOURCE 'DB.PUBLIC.ORDERS');

Note, that both tables have same name of primary key named "id".

Invoke GET method to URL http://localhost:8080/odata4/olingo_basic/Source/Customers/?$count=true&$expand=Orders_FK0

*Result:* The non-nullable property 'id' is missing.

Here are selected part of Teiid's log:
*Query:*
SELECT g10.id, g10.name, g11.id, g11.customerid, g11.place FROM Source.Customers AS g10 LEFT OUTER JOIN Source.Orders AS g11 ON g10.id = g11.customerid ORDER BY g10.id
*Result:*
|id|name     |id    |customerid|place  |
|--|---------|------|----------|-------|
|1 |customer1|1     |1         |town   |
|1 |customer1|2     |1         |state  |
|1 |customer1|3     |1         |country|
|1 |customer1|4     |1         |abroad |
|2 |customer2|5     |2         |state  |
|2 |customer2|6     |2         |country|
|3 |customer3|7     |3         |town   |
|3 |customer3|8     |3         |town   |
|4 |customer4|<null>|<null>    |<null> |