SQL：如何在大型表中查找重复值
我有一张大约200万SKU的桌子。有没有办法通过运行select查询来检测任何多次出现的sku？？？查看结果集需要很长时间@拉里：同意了，忘了加上having条款SQL：如何在大型表中查找重复值,sql,Sql,我有一张大约200万SKU的桌子。有没有办法通过运行select查询来检测任何多次出现的sku？？？查看结果集需要很长时间@拉里：同意了，忘了加上having条款 Select SKU From table Group By SKU Having Count(SKU) > 1 SELECT SKUColumn, COUNT(*) FROM YourTable GROUP BY SKUColumn HAVING COUNT(*) > 1 select SKU, count
Select SKU
From table
Group By SKU
Having Count(SKU) > 1
SELECT SKUColumn, COUNT(*) FROM YourTable
GROUP BY SKUColumn HAVING COUNT(*) > 1
select SKU, count(SKU) cnt from table group by SKU having cnt > 1