>2. Is this the nested join? How can it work? > >FROM tab1 LEFT OUTER JOIN tab1.c3 = tab2.c3 > RIGHT OUTER JOIN tab3 LEFT OUTER JOIN tab4 > ON tab3.c1 > ON tab2.c3 = tab4.c3
I would do it like this:
from TABLE1 ;
join TABLE2 ;
on TABLE1.FIELD1 = TABLE2.FIELD1 ;
join TABLE3 ;
on TABLE2.FIELD2 = TABLE3.FIELD2 ;
join TABLE4 ;
on TABLE3.FIELD3 = TABLE4.FIELD3
This is much cleaner and easier to read than nested JOIN statements.
