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我可以寫這樣的查詢嗎?如何在SQL Server中對SQL更新查詢使用邏輯OR運算符?
我想更新表格,但我不確定需要更新多少個列以及可以應用多少個條件。我完全依賴於SQL參數。
這裏是我的樣本SQL查詢:
CREATE PROCEDURE UpdateRecords
(
@Category AS VARCHAR(20)='',
@Manufature AS VARCHAR(20)='',
@Model AS VARCHAR(20)='',
@CategoryNew AS VARCHAR(20),
@ManufatureNew AS VARCHAR(20),
@ModelNew AS VARCHAR(20),
@CategoryOld AS VARCHAR(20),
@ManufatureOld AS VARCHAR(20),
@ModelOld AS VARCHAR(20)
)
AS
UPDATE table19999
SET (@category='' OR [email protected]),
(@Manufature='' OR [email protected]),
(@Model='' OR [email protected])
WHERE (@category='' OR [email protected]) AND
(@Manufature='' OR [email protected]) AND
(@Model='' OR [email protected])
任何幫助嗎?
的編碼是錯誤的,請說你需要做什麼。何時更新類別字段? – vulkanino 2012-02-03 09:08:36
我猜如果@ category =''不會改變其他類別,如果category = @ categoryold set category = @ categorynew – 2012-02-03 09:20:51
SQL中的工作單位是行,而不是列。 – onedaywhen 2012-02-03 11:29:57