But note that SQL Server does not remember the format in any way.
As you can see, together the two integers in a datetime column represent a specific day at a specific time.As you can see, a timestamp column has a very limited scope.The integer represents the number of days before or after that date.Dan is someone I trust very much, so I guess I have some re-learning to do (start using the dateadd method instead of the string method).Algorithm: today-refdaterefdate, or expressed with tsql (using as base date select dateadd(day, datediff(day, '20040101 current_timestamp '20040101 An argument for above is that is is faster than visual studio 2012 system requirements doing string manipulations.The answer is definitely "yes" and definitely "Date data type". .The date is then followed by the time, which is 1 hour, 58 minutes and.567 seconds.They decided to skip the leap day over a period of 40 years (from 1700 to 1740 and Sweden would be in sync with the Gregorian calendar after 1740 (but meanwhile not in sync with anyone).Select cast 20041223' AS datetime) :00:00.000, select cast 14:23:58' AS datetime) :23:58.000, as of SQL Server 2008, we have several new types related to date and time: Name sn, minimum value, maximum value, accuracy, storage datetime2 dt :00:00.However, we have not protected us from if anyone now explicitly sets the value and set the time portion to something other than 00:00:00:000.Datetimeoffset Data Type (New in SQL Server 2008) select col_datetime, col_datetimeoffset from tempusfugit GO The new datetimeoffset data type is useful when dealing with time-zone information. .
For example, you can use the timestamp value to determine whether to commit a transaction or roll back a transaction by comparing the original timestamp value to the most recent value.
Select dateadd(day, (datediff (day, '20000107 current_timestamp) / 7) * 7, '20000107 or select dateadd(day, (datediff (day, '20000108 current_timestamp) / 7) * 7, '20000107 The first will return the current day if run on friday, the latter will return the previous friday.This prints: 20:01 PM, in a select query, replace @date with your column's name.But since this is the only format defined in the ansi SQL standard, I think it is worth mentioning this as a special case.Up vote 9 down vote, you'll need two converts, one to get the HH:mm time, and one to get AM/PM.But if you insist for some reason to use smalldatetime, datetime, datetime2 or datetimeoffset then perhaps setting the time portion to 00:00:00 is fine for you?Now, isnt it great that we as of 2008 have separate data and time types?The base date in Enterprise Manager (and some other Microsoft tools and applications).But note that this may have unexpected behavior in SQL Server.0 against a (not small-) datetime column.Heres another way to search for all rows from a specific month: select c1, dt from #dts where datepart(year, dt) 2004 AND datename(month, dt) 'March' Above returns the expected rows, but there are two problems.