Common SQL time Format the default date field for the Chinese version of SQL Server datetime format is yyyy-mm-DD Thh:mm:ss.mmm For example:Selectgetdate ()2004- the- A One: .:08.177This is used to transfer data between databases or to be
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,
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
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
First, review the syntax format of CONVERT (): convert ([length], [, Style])
Second, here pay attention to the meaning of style: style is the conversion of datatime and smalldatetime data to a string by the SQL Server system provided by the
Data | data type datetime and interval are two types of data that are related to time. Their role is reflected in the creation or alteration of a record in a record library, the time it takes to run a record when a time occurs, or when a DateTime
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
SQL Server uses date to represent dates, time to represent times, and datetime and datetime2 to represent dates and times.1, the precision of the second refers to the number of decimal places used to represent 1s:The precision of the datetime data
Reference
DateTime format encyclopedia in SQL commands
Code in C #:
DateTime mydate = DateTime.Now;
sSQL = "Insert into Article (title,createddate) Values (' New Title ', '" + Mydate.format ("G", NULL) + "");
Format character reference
Processing of date data format:
Result of convert (varchar (16), time 1, 20): 2007-02-01 08: 02
Result of convert (varchar (10), time 1, 23): 2007-02-01
Statement and query result:Select convert (varchar (100), getdate (), 0): 05 16 2006
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