datetime2

Is there a function like isdate() for datetime2?

由 送分小仙女□ 提交于 2020-07-20 07:46:14
问题 I know there is a function called ISDATE to validate DATETIME columns, but it works only for the SMALLDATETIME and DATETIME types. Is there a similar way to validate the new data type DATETIME2 in SQL Server 2008 and 2012? 回答1: In SQL Server 2012, you can use TRY_CONVERT : SELECT TRY_CONVERT(DATETIME2, '2012-02-02 13:42:55.2323623'), TRY_CONVERT(DATETIME2, '2012-02-31 13:42:55.2323623'); Results: 2012-02-02 13:42:55.2323623 NULL Or TRY_PARSE : SELECT TRY_PARSE('2012-02-02 13:42:55.2323623' AS

Is number after DateTime2 is for nanosecond purpose?

由 a 夏天 提交于 2020-01-03 08:17:48
问题 I have read the document already but i do not fully understand The default precision is datetime2(7) is 7 represent the precision of nanosecond? 回答1: The resolution of the default precision (7) datetime2 type is 100 nanoseconds. An excellent reference for things date/time is : The ultimate guide to the datetime datatypes 回答2: No, the number represents the number of digits preserved after the decimal point for the seconds. 3 would be millisecond, 6 microsecond and 7 equivalent to a precision

SQL ignore nanoseconds when comparing datetime2

由 烈酒焚心 提交于 2019-12-31 00:59:48
问题 I have 2 tables with a datetime2 field each. One of the tables has stored nanoseconds as well, while the other one only stores up to milliseconds (there is no way to change this data). Now I want to compare the 2 tables and check if the datetime2 values match, but I have to ignore the nanoseconds for this. Sample data: Table1 Table2 2018-01-24 10:51:23.9976180 2018-01-24 10:51:23.9970000 2018-01-24 10:51:23.9976180 2018-01-24 10:51:23.9970000 2018-01-24 11:08:23.2578500 2018-01-24 11:08:23

Force DateTime with Entity Framework Database First

由 落爺英雄遲暮 提交于 2019-12-23 23:26:39
问题 I am connecting to a database using EF database first. Therefore my models are autogenerated. When I update a record my DateTimes are getting written as SQL type DateTime2. The production server is SQL Server 2005 (no comments please), so the updates fail as DateTime2 is not supported. I've tried creating a metadata class for my model as per http://www.asp.net/mvc/overview/getting-started/database-first-development/enhancing-data-validation and decorating the member with [Column(DbType =

Entry Framework 使用的 SQL Server 版本不支持数据类型“dateti...

由 我的梦境 提交于 2019-12-23 20:00:17
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 存取包含“ DateTime ”数据类型的列时会引发异常 异常信息 ： System.Data.UpdateException : 更新条目时出错。有关详细信息，请参见内部异常。 ----> System.ArgumentException : 使用的 SQL Server 版本不支持数据类型“datetime2”。 出现这个异常是因为SQL2008中加入了一个新的类型“DateTime2”，但是在SQL2005以及SQL2000中都不存在这个数据类型。这是一个已知的缺陷，可以手动解决。 用记事本或其它文本工具打开 *.edmx 文件，搜索 ProviderManifestToken="2008" ，然后将 2008 更改为 2005 保存，并重新编译即可。当在IDE中更改后，这里会被重新修改回2008，需要再次修改。 关于这个异常的更多信息，可以参考这个链接： http://msdn.microsoft.com/en-us/library/bb896273.aspx 来源： oschina 链接： https://my.oschina.net/u/93402/blog/128438

Why does EF5 code first use datetime2 when inserting a nullable datetime into the database?

由 余生颓废 提交于 2019-12-17 13:00:02
问题 I am saving a Cart object to the database that has a nullable datetime. This is the error I get: The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value. There are quite a few stackoverflow posts documenting fixes to this problem. However, when code first is creating the database it will create the field as a DateTime (allow nulls). But for some reason, code first tries to insert using a DateTime2 field. I am wondering why EF creates the field one way

Django: 'unicode' object has no attribute 'tzinfo'. Production server only

由 谁说我不能喝 提交于 2019-12-14 03:49:01
问题 I'm stumped. With my local set up (python manage.py runserver) everything runs fine. With my production set up (wsgiserver.CherryPyWSGIServer), I get 'unicode' object has no attribute 'tzinfo' when my program tries to convert datetime2(7) from the database to local time in the pytz module. Using Django 1.9. Both set ups use django-pyodbc-azure to connect to the same mssql database. In fact to troubleshoot this, both use the same settings files. # settings.py ... DATABASES = { 'default': {

Convert DateTime2 to DateTime from Stored Procedure Executed Result

由 岁酱吖の 提交于 2019-12-12 02:56:57
问题 How can i Convert DateTime2 to DateTime from Stored Procedure Executed Result ? I have a procedure which will execute a dynamically formed sql statement which will have an output of various columns in which there are some datetime2 data types. How can I change that datetime2 to datetime because I haev to assign this procedure as data source to a crystal report but crystal report converts datetime2 to string and string can't do required logic in report. So I want the procedure to give datetime

use datetime instead of datetime2 sqlserver hibernate

由 僤鯓⒐⒋嵵緔 提交于 2019-12-11 13:43:13
问题 I have hibernate configured as auto-update. I have a mssql-server 2012. Hibernate creates my java.util.Date objects as datetime2 in the database. Is there a possiblity to force hibernate to create datetime in the database? I know that I can use annotations on the fields in my object, but there are too many. So I would like to configure hibernate, so that every java.util.Date becomes automatically datetime in the databse. 回答1: The first thing coming to my mind is defining a new Hibernate

Does SQL Server 2005 support datetime2

由 烈酒焚心 提交于 2019-12-11 09:03:33
问题 I can't seem to find in the official documentation if SQL Server 2005 supports datetime2 data type? 回答1: Apparently it does not. Here are the supported data types. EDIT: According to the following sources datetime2 was introduced in SQL Server 2008. http://blogs.msdn.com/b/manisblog/archive/2007/08/28/sql-server-2008-enhancements-in-date-and-time-data-types.aspx http://www.4guysfromrolla.com/articles/101508-1.aspx 回答2: Open your EDMX in a file editor (or “open with…” in Visual Studio and
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