Inner join source code:

Those user status without corresponding entries in tj02t will NOT be displayed in result set:
change inner join to left outer join, the result are opposite:
Association has the same behavior with left outer join:
Inner join source code:
Those user status without corresponding entries in tj02t will NOT be displayed in result set:
change inner join to left outer join, the result are opposite:
Association has the same behavior with left outer join: