Oracle Conditional sum This question was born in my mind looking at this kind of code:

select sum(value)
  into positive
  from my_table
 where value &gt; 0;

 select sum(value)
  into negative
  from my_table
 where value &lt; 0;


This works well for take the totals of this table.

But, my question is how I can get the sub-totals of my_table using only a statement.

expected result:

Having this data on my_table

VALUE
-----
  1.0
 -2.0
  3.0
 -4.0
  5.0
 -6.7
  8.9


I'd a DML statement who can give me this output

positive | negative
---------+---------
    17.9 |    -12.7


Is this kind of operation possible?
If yes, how can i get it?
SQL&gt; r
  1  with t as (
  2      select  1.0 as x from dual
  3      union all select -2.0 as x from dual
  4      union all select  3.0 as x from dual
  5      union all select -4.0 as x from dual
  6      union all select  5.0 as x from dual
  7      union all select -6.7 as x from dual
  8      union all select  8.9 as x from dual)
  9  select sum(case when x &gt; 0 then x else 0 end) as sum_of_positives,
 10         sum(case when x &lt; 0 then x else 0 end) as sum_of_negatives
 11*   from t

SUM_OF_POSITIVES SUM_OF_NEGATIVES
---------------- ----------------
            17,9            -12,7