Introduction to Database Systems Queries in SQL The select ...

Outer Join: Examples
select fatherChild.child, father, mother
from motherChild join fatherChild
on motherChild.child = fatherChild.child
select fatherChild.child, father, mother
from motherChild left outer join fatherChild
on motherChild.child = fatherChild.child
select fatherChild.child, father, mother
from motherChild right outer join fatherChild
on motherChild.child = fatherChild.child
select fatherChild.child, father, mother
from motherChild full outer join fatherChild
on motherChild.child = fatherChild.child
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Ordering the Result: order by
“Return name and income of persons under thirty, in
alphabetic order of the names”
select name, income
from person
where age < 30
order by name
select name, income
from person
where age < 30
order by name desc
ascending
order
descending
order
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