sql 从SQL表中删除重复项

Posted 2021-05-14

WITH cct
AS (SELECT
		a.RowHash,
		RANK() OVER (PARTITION BY a.RowHash ORDER BY a.ID) AS rkk,
		a.id
	FROM sym.dimAccounts a
	WHERE a.RowHash IN (SELECT
			a.RowHash
		FROM sym.dimAccounts a
		GROUP BY a.RowHash
		HAVING (COUNT(a.RowHash) > 1)))
delete
FROM sym.dimAccounts
WHERE ID IN (SELECT
		cct.id
	FROM cct WHERE cct.rkk > 1)

WITH cct AS (SELECT mmtt.TRANSACTION_ID, RANK() OVER(PARTITION BY mmtt.TRANSACTION_ID ORDER BY mmtt.ID) AS rkk, mmtt.ID FROM MTL_MATERIAL_TRANSACTIONS_Test mmtt
WHERE mmtt.TRANSACTION_ID in (SELECT     mmtt.TRANSACTION_ID
FROM         MTL_MATERIAL_TRANSACTIONS_Test mmtt
GROUP BY mmtt.TRANSACTION_ID
HAVING     (COUNT(mmtt.TRANSACTION_ID) > 1))
)
DELETE FROM MTL_MATERIAL_TRANSACTIONS_Test WHERE ID IN (select cct.ID FROM cct)