Поиск дубликатов товаров по Модель+Бренд+Артикул
Код
select model, artikul, brand, count(cnt) as "count"
from
(
select UPPER(LTRIM(RTRIM(g.G_MODEL))) as model, UPPER(LTRIM(RTRIM(g.G_SID))) as artikul, b.B_NAME as brand, 1 as cnt
from TBL_GOODS g, TBL_BRANDS b
where g.G_B_ID = b.B_ID
) t
group by model, artikul, brand
having count(cnt) > 1
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