Собственно вот запрос

SELECT TOP 10 c.prodName, \
								c.prodUnit, \
								c.prodPrice, \
								SUM(a.Quantity) AS kolvo, \
								ROUND(SUM(c.prodPrice*a.Quantity),2) AS rowitog \
							FROM \
								operations a, \
								products c \
							WHERE \
								a.operName='realiz' AND \
								a.prodID=c.prodID AND \
								c.basID=[zbasID] AND \
								a.operDate BETWEEN #"+SQLdate(inJSONdata.operDateBeg)+"# AND #"+SQLdate(inJSONdata.operDateEnd)+"# \
							GROUP BY c.prodName, c.prodUnit, c.prodPrice \
							ORDER BY SUM(a.Quantity) DESC

Выдаёт то 11, то 22 строки - где туплю ?

http://www.sql.ru/forum/1218145/select-top-10-vydayot-bolshe-strok-gde-tuplu