Single row from this query without create a group by

Can I have a single row from this query without create a group by on tipo (TIPO can have only 2 value (A,D)
SELECT
CASE TIPO
WHEN 'D' THEN SUM(IMPORTO) ELSE 0 END DIMPORTO,
CASE TIPO
WHEN 'A' THEN SUM(IMPORTO) ELSE 0 END AIMPORTO
FROM MGIORNALE
WHERE K_CONTO = '100001' --CONTO
AND DECODE(T_MOVIM,'MRAP',TO_DATE('31/12/'||to_char(a_competenza),'DD/MM/YYYY'),DATA_RG)
-- BETWEEN DATAA AND DATAB
BETWEEN '01/01/2006' AND '31/12/2006'
--GROUP BY TIPO
--AND TIPO = COL_conto
Thanks in advance

Is like this?
sum (CASE TIPO
WHEN 'D' THEN IMPORTO ELSE 0 END) DIMPORTO,

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aecordoba wrote:
I beg your pardon for my bad English. (It isn't my original language.)
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