node to traverse cannot be null (Hibernate SQL)

Question

I\'m performing a SQL query through hibernate, which looks like:

SELECT thi 
FROM track_history_items thi 
JOIN artists art 
  ON thi.artist_id = art.id 
WHERE t         


        

Answer 1

You can also get this error if you execute a query that has a syntax error, such as forgetting a comma in an update statement

update MyObject set field1=5 field2=4 WHERE id = 4

See how there is a missing comma between field1=5 and field2=4? You will get a node to traverse cannot be null error.