left outer join without rows from "left" table

Hi all,

I want to get data from these tables:
TABID
integer id,
name varchar
example values:
1  'id1'
2  'id2'
[...]
TABA
integer id,
timestamp t,
integer a
example values:
1 '2009-02-13 00:00:00' 10
1 '2009-02-13 02:00:00' 19
TABB
integer id,
timestamp t,
integer b
example values:
1 '2009-02-13 00:00:00' 90
1 '2009-02-13 01:00:00'  109
in this form:
select * from TABID left outer join TABA on (id) left outer join TABB on TABB.id = TABID.id and TABA.t = TABB.t
So, basically, all the rows from table TABID joined with both table TABA and TABB. The problem is that some times TABB
doesn'thave the "t" values TABA has, and some other times TABA doesn't have the "t" values TABB has. 
So I would like an output like:
id, TABA.t, a, TABB.t, b
1 '2009-02-13 00:00:00' 10'2009-02-13 00:00:00' 90
1 NULL     NULL     '2009-02-13 01:00:00'  109
1 '2009-02-13 02:00:00'  19 NULL     NULL
How can I do it?


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