SELECT r.custid custid, i.productid,
i.officialsocialprice price,
SUM(i.quanitity) amount
FROM IMEIBATCH i, RDCUST r, RDCUSTDETAIL d
WHERE (i.vendororgacode = 'ZD' OR
i.vendororgacode IN
(SELECT orgacode FROM organiza WHERE parentorgacode = 'ZD'))
AND i.provorgacode = d.orgcode
AND r.custid = d.custid
AND i.inputdate BETWEEN TO_DATE('2013-07-15', 'YYYY-MM-DD') AND
TO_DATE('2013-07-31', 'YYYY-MM-DD') + 1
GROUP BY r.custid, i.productid, i.officialsocialprice
加上group by custid之后 速度明显下降!求高手指点一二