what difference between datetime and datetime2

1. The time format for the DateTime field type is yyyy-mm-dd HH:mm:ss.fff , 3 F, which has a time precision of 1/300 seconds, which is rounded to round to. 000,. 003, or. 007-second increments when used, with an example -All: 15.007 .2, the

The time format for the DateTime field type is Yyyy-mm-dd hh:mm:ss.fff,3 F, which is accurate to 1 milliseconds (ms), example 2014-12-0317:06:15.433.The DateTime2 field type corresponds to a time format of Yyyy-mm-dd hh:mm:ss.fffffff,7 F, which is

DateTime field type corresponds to a time format of yyyy-mm-dd HH:mm:ss.fff , 3 F, accurate to 1 ms (MS), example -- £ º15.433 .The DateTime2 field type corresponds to a time format of yyyy-mm-dd HH:mm:ss.fffffff , 7 F, accurate to 0.1

I. Scenarios In SQL Server 2005, there is a table TestDatetime, where the data type of the Dates field is datetime. If you see a table record, what do you first think? (Figure 1: Data List) When you see this data, do you think this design is a

I. Scenarios In SQL Server 2005, there is a table TestDatetime, where the data type of the Dates field is datetime. If you see a table record, what do you first think? Figure 1: Data List) When you see this data, do you think this design is a waste

1. Date output formatted datetime/= stringImport datetimenow = Datetime.datetime.now ()Now.strftime ('%y-%m-%d%h:%m:%s ')Output' 2015-04-07 19:11:21 'Strftime is an instance method of a DateTime class.2. Date Output Formatted string = DateTimeImport

A TimeSpan structure represents a time interval.Namespaces: SystemAssembly: mscorlib (in mscorlib.dll)The 1.DateTime value type represents a specific date time from January 1, 01 0:0 0 seconds to the December 31, 9999 23:59 59 seconds. Therefore,

Turn from:A TimeSpan structure represents a time interval.Namespaces: SystemAssembly: mscorlib (in mscorlib.dll)The 1.DateTime value type represents a specific date time from January 1, 01 0:0 0 seconds to the December 31, 9999 23:59 59 seconds.

Namespaces: SystemAssembly: mscorlib (in mscorlib.dll)The 1.DateTime value type represents a specific date time from January 1, 01 0:0 0 seconds to the December 31, 9999 23:59 59 seconds. Therefore, you can use a DateTime value type to describe any

A TimeSpan structure represents a time interval.Namespaces: SystemAssembly: mscorlib (in mscorlib.dll)The 1.DateTime value type represents a specific date time from January 1, 01 0:0 0 seconds to the December 31, 9999 23:59 59 seconds. Therefore,