Tim Biegeleisen
2020-11-29 17:22:42
我们可以在此处使用可删除的CTE：
WITH cte AS (
SELECT *, COUNT(*) OVER (PARTITION BY col1, col2, col3) cnt
FROM yourTable
)
DELETE
FROM cte
WHERE cnt > 1 AND col6 = 0 AND col7 = 0 AND col8 = 0;
上述识别“重复”的CTE按照自己的定义，其为2个或更多的记录具有用于相同的值col1，col2和col3。然后，我们删除满足其他3列要求的重复项。
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