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SQL Server 2008 - IF NOT EXISTS INSERT ELSE UPDATE - Stack Overflow
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日期:2025-11-08
If clockDate is NOT datetime field (just date), then the SQL engine will do it for you - no need to cast on a set/insert statement. IF (NOT EXISTS(SELECT * FROM Clock WHERE clockDate = '08/10/2012') AND userName = 'test') BEGIN INSERT INTO Clock ......看更多














