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如何用双键在表格上创建修改日期列的触发程序
原标题:How to create a trigger to modify date column on table with double key

我需要在插入或更新时创建一个触发程序, 将当前日期和标记; 时间标记保存到行中 。

表格结构

[Period] [char](7) NOT NULL,
[CompanyAlfaCode] [char](2) NOT NULL,
[SamplePercentaje] [int] NULL,
[Usuario] [varchar](50) NULL,
[Date] [Datetime] NULL,

非常感谢。

最佳回答

比如说:

CREATE TRIGGER DateTrigger ON CompanySampleConfig
AFTER INSERT,UPDATE
AS
BEGIN
  UPDATE CompanySampleConfig SET [Date] = current_timestamp
  WHERE EXISTS
  (SELECT    FROM inserted
  WHERE CompanySampleConfig.[Period] = inserted.[Period]
    AND CompanySampleConfig.[CompanyAlfaCode] = inserted.[CompanyAlfaCode]
END
问题回答

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