datetime-generation

MySQL GROUP BY DateTime +/- 3 seconds

由 。_饼干妹妹 提交于 2019-11-26 18:18:38
问题 Suppose I have a table with 3 columns: id (PK, int) timestamp (datetime) title (text) I have the following records: 1, 2010-01-01 15:00:00, Some Title 2, 2010-01-01 15:00:02, Some Title 3, 2010-01-02 15:00:00, Some Title I need to do a GROUP BY records that are within 3 seconds of each other. For this table, rows 1 and 2 would be grouped together. There is a similar question here: Mysql DateTime group by 15 mins I also found this: http://www.artfulsoftware.com/infotree/queries.php#106 I don't

Entity Framework/SQL2008 - How to Automatically Update LastModified fields for Entities?

由 China☆狼群 提交于 2019-11-26 15:13:36
If i have the following entity: public class PocoWithDates { public string PocoName { get; set; } public DateTime CreatedOn { get; set; } public DateTime LastModified { get; set; } } Which corresponds to a SQL Server 2008 table with the same name/attributes... How can i automatically : Set the CreatedOn/LastModified field for the record to now (when doing INSERT) Set the LastModified field for the record to now (when doing UPDATE) When i say automatically , i mean i want to be able to do this: poco.Name = "Changing the name"; repository.Save(); Not this: poco.Name = "Changing the name"; poco

Entity Framework/SQL2008 - How to Automatically Update LastModified fields for Entities?

由 倖福魔咒の 提交于 2019-11-26 04:19:37
问题 If i have the following entity: public class PocoWithDates { public string PocoName { get; set; } public DateTime CreatedOn { get; set; } public DateTime LastModified { get; set; } } Which corresponds to a SQL Server 2008 table with the same name/attributes... How can i automatically : Set the CreatedOn/LastModified field for the record to now (when doing INSERT) Set the LastModified field for the record to now (when doing UPDATE) When i say automatically , i mean i want to be able to do this
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