How is datetime stored in SQL Server?

According to SQL Server documentation, the database engine stores a DATETIME value as two integers. The first integer represents the day and the second integer represents the time.

What’s the difference between datetime and DATETIME2?

DATETIME2 has a date range of “0001 / 01 / 01” through “9999 / 12 / 31” while the DATETIME type only supports year 1753-9999. Also, if you need to, DATETIME2 can be more precise in terms of time; DATETIME is limited to 3 1/3 milliseconds, while DATETIME2 can be accurate down to 100ns. Both types map to System.

What are date functions?

The DATE function returns the sequential serial number that represents a particular date. Syntax: DATE(year,month,day) The DATE function syntax has the following arguments: Year Required. The value of the year argument can include one to four digits.

What is the difference between date and datetime in SQL Server?

The DATE type is used for values with a date part but no time part. MySQL retrieves and displays DATE values in ‘ YYYY-MM-DD ‘ format. The supported range is ‘1000-01-01’ to ‘9999-12-31’ . The DATETIME type is used for values that contain both date and time parts.

What is the difference between datetime and timestamp data types in SQL Server?

What is the difference between MySQL DATETIME and TIMESTAMP data type? Range − Datetime data type supports a date along with time in the range between 1000-01-01 00:00:00 and 9999-12-31 23:59:59. But timestamp data type supports a date along with time in the range between ‘1970-01-01 00:00:01’ to ‘2038-01-19 08:44:07’.

What is the difference between datetime and Datetime2 in SQL Server?

Datetime2 was introduced with SQL Server 2008, so it is here long enough to draw some comparisons with its “older brother”. The main difference is the way of data storage: while in Datetime type, the date comes first and then time, in Datetime2, 3 bytes, in the end, represents date part!

Should I use DateTime2 or Datetimeoffset?

If you are storing only UTC values (where the offset is always zero), you can save storage space with datetime2 . datetimeoffset requires 10 bytes of storage whereas datetime needs 8 bytes for precision 5 or greater, 7 bytes for precision 3-4, and 6 bytes for precision 2 or less.

What is the difference between DateTime and TIMESTAMP in SQL?