get datetime sql

CONVERT (Data_type,expression[,style])CONVERT (varchar (10), field name, conversion format)DescriptionThis style is typically in the time type (Datetime,smalldatetime) and the string type (Nchar,nvarchar,char,varchar)It is only used when converting

Use convert in SQL server2000 to get the datetime data type style (full)Processing of date data formats, two examples:CONVERT (varchar (16), time one, 20) results: 2007-02-01 08:02/* time is generally a field in the GETDATE () function or data table

Research on the null values of datetime type in SqlServer and the null values of DateTime in c # In SqlServer2000: The default value is 1900-01-0100:00:00, in C #, the null value of DateTime is the minimum value of 0001-01-0100:00:00. For database

Processing of date data formats, two examples:CONVERT (varchar (16), time one, 20) results: 2007-02-01 08:02/* time is generally a field in the GETDATE () function or data table */CONVERT (varchar (10), time one, 23) Result: 2007-02-01/*varchar (10)

After the datetime type is passed into Asp.net Ajax, the time will change to the zero time zone. In other words, the time is 8 hours less than the time in China. For example:Custom type myorderFor more information about how to use custom types in

In sqlserver 2000, the null value of datetime is the default value 00:00:00. in C #, the null value of datetime is the minimum value 0001-01-01 00:00:00. For database insertion, the date value updated to a null value is somewhat less than expected.

In the project development process, we often have to do some time-based queries, such as querying the history of the specified time range, but these times are passed from the UI parameters, so we write the SQL statement must use the string

DateTime.Now.ToShortTimeString () DateTime dt = DateTime.Now; Dt. ToString ();//2005-11-5 13:21:25 Dt. Tofiletime (). ToString ();//127756416859912816 Dt. TOFILETIMEUTC (). ToString ();//127756704859912816 Dt. ToLocalTime (). ToString ();//2005-11-5

DateTime.Now.ToShortTimeString ()DateTime dt = DateTime.Now;Dt. ToString ();//2005-11-5 13:21:25Dt. Tofiletime (). ToString ();//127756416859912816Dt. TOFILETIMEUTC (). ToString ();//127756704859912816Dt. ToLocalTime (). ToString ();//2005-11-5 21:21

This article belongs to theUnderstand the mysteries of performance-slow in applications, fast in SSMS"seriesNext: Understanding the Mysteries of performance-application slow, SSMs fast (5)--case: How to deal with parameter sniffingWe put aside the