I have the following SQL:
select
from pluspbillline
left outer join workorder
on workorder.siteid=pluspbillline.siteid
and wor
I had the same message when hovering over the "LEFT" word, but the whole query ran without a problem. On the other hand, when I hovered over "WITH", I got a piece of advice about restructuring the whole query. So, that message about disconnection could be not a sign of an error, but a warning about a too complex sentence. SQLDeveloper's editor does not mention the level of the problem.