In SQL Server, I often need to perform some time-type field conversions, but I don't quite remember it. So I collected the following sqlserverconvert datetime-related materials and posted them on my site, it is convenient for you to search for it
DateTime is one of the most commonly used and problematic data types. The following problems exist:
1. DateTime Storage Format
Before explaining the DateTime storage format, you must correct a concept. Components of the DateTime type: year, Month,
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
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
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
Method One:convert.todatetime (String)The string format is required and must be YYYY-MM-DD HH:MM:SS================================================Method Two: Convert.todatetime (String, IFormatProvider)DateTime DT;DateTimeFormatInfo Dtformat = new
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