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select id, pdate, ptype, count(*), sum(amount), from payment PA computer ba, network ca, other da where PA.pdate BETWEEN TRUNC(sysdate) AND TRUNC(sysdate) + .99999 need to join with computer table if ptype =computer and pa.id=ba.id(+) need to join with netork table if ptype =network and pa.id=ca.id(+) need to join with other table if ptype =other and pa.id=da.id(+) group by id,pdate,ptype
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