New Date and Time Functions in SQL Server 2012

Problem

SQL Server 2012, has new date and time functions such as DATEFROMPARTS, TIMEFROMPARTS, DATETIMEFROMPARTS, DATETIME2FROMPARTS, SMALLDATETIMEFROMPARTS, DATETIMEOFFSETFROMPARTS, EOMONTH that can be used to Get Date and Time Values from their parts. In this tip we take a look at some basic examples of how these can be used.

Solution

In this tip we will discuss how to utilize the below new date and time functions available in SQL Server 2012.

1. DATEFROMPARTS Function
2. TIMEFROMPARTS Function
3. DATETIMEFROMPARTS Function
4. DATETIME2FROMPARTS Function
5. SMALLDATETIMEFROMPARTS Function
6. DATETIMEOFFSETFROMPARTS Function
7. EOMONTH Function

Using DATEFROMPARTS Function

The DATEFROMPARTS function, which is available in SQL Server 2012, returns a date value with the date part set to the specified year, specified month and the specified day, and the time portion set to the default as shown in the below query result.

SYNTAX: – DATEFROMPARTS (YEAR, MONTH, DAY)




/* Using DATEFROMPARTS Function */

DECLARE

  @YEAR  INT = 2012

, @MONTH INT = 01

, @DAY   INT = 09




SELECT DATEFROMPARTS (@YEAR, @MONTH, @DAY) AS [Retrieved Data Using DATEFROMPARTS Function]

GO




Retrieved Data Using DATEFROMPARTS Function

——————————————-

2012-01-09

Using TIMEFROMPARTS Function

The TIMEFROMPARTS function, which is available in SQL Server 2012, returns a full time value as shown in the below query result.

It is important to note that the fractions argument actually depends on the precision argument.

For example:

1. When fractions have a value of 5 and precision has a value of 1, then the value of fractions represents 5/10 of a second.
2. When fractions have a value of 50 and precision has a value of 2, then the value of fractions represents 50/100 of a second.
3. When fractions have a value of 500 and precision has a value of 3, then the value of fractions represents 500/1000 of a second.

SYNTAX: – TIMEFROMPARTS (HOUR, MINUTE, SECONDS, FRACTIONS, PRECISION)




/* Using TIMEFROMPARTS Function */

DECLARE

  @HOUR    INT = 11

, @MINUTE  INT = 59

, @SECONDS INT = 59




SELECT

 TIMEFROMPARTS (@HOUR, @MINUTE, @SECONDS, 500, 3)

 AS [Retrieved Data Using TIMEFROMPARTS Function]

GO




Retrieved Data Using TIMEFROMPARTS Function

——————————————-

11:59:59.500

Using DATETIMEFROMPARTS Function

The DATETIMEFROMPARTS function, which is available in SQL Server 2012, returns a full datetime value as shown in the below query result.

SYNTAX: – DATETIMEFROMPARTS (YEAR, MONTH, DAY, HOUR, MINUTE, SECONDS, MILLISECONDS)




/* Using DATETIMEFROMPARTS Function */

DECLARE

  @YEAR INT = 2012

, @MONTH INT = 01

, @DAY INT = 09

, @HOUR INT = 11

, @MINUTE INT = 59

, @SECONDS INT = 59

, @MILLISECONDS INT = 0




SELECT

 DATETIMEFROMPARTS (@YEAR, @MONTH, @DAY, @HOUR, @MINUTE, @SECONDS, @MILLISECONDS)

 AS [Retrieved Data Using DATETIMEFROMPARTS Function]

GO




Retrieved Data Using DATETIMEFROMPARTS Function

———————————————–

2012-01-09 11:59:59.000

Using DATETIME2FROMPARTS Function

The DATETIME2FROMPARTS function, which is available in SQL Server 2012, returns a full datetime2 value as shown in the below query result.

SYNTAX: – DATETIME2FROMPARTS (YEAR, MONTH, DAY, HOUR, MINUTE, SECONDS, FRACTIONS, PRECISION)




/* Using DATETIME2FROMPARTS Function */




DECLARE

  @YEAR    INT = 2012

, @MONTH   INT = 01

, @DAY     INT = 09

, @HOUR    INT = 11

, @MINUTE  INT = 59

, @SECONDS INT = 59




SELECT

 DATETIME2FROMPARTS (@YEAR, @MONTH, @DAY, @HOUR, @MINUTE, @SECONDS, 500, 3)

 AS [Retrieved Data Using DATETIME2FROMPARTS Function]

GO




Retrieved Data Using DATETIME2FROMPARTS Function

————————————————

2012-01-09 11:59:59.500

Using SMALLDATETIMEFROMPARTS Function

The SMALLDATETIMEFROMPARTS function, which is available in SQL Server 2012, returns a full smalldatetime value as shown in the below query result.

SYNTAX: – SMALLDATETIMEFROMPARTS (YEAR, MONTH, DAY, HOUR, MINUTE)




/* Using SMALLDATETIMEFROMPARTS Function */




DECLARE

  @YEAR   INT = 2012

, @MONTH  INT = 01

, @DAY    INT = 09

, @HOUR   INT = 11

, @MINUTE INT = 59




SELECT

 SMALLDATETIMEFROMPARTS (@YEAR, @MONTH, @DAY, @HOUR, @MINUTE)

 AS [Retrieved Data Using SMALLDATETIMEFROMPARTS Function]

GO



Retrieved Data Using SMALLDATETIMEFROMPARTS Function

—————————————————-

2012-01-09 11:59:00

Using DATETIMEOFFSETFROMPARTS Function

The DATETIMEOFFSETFROMPARTS function, which is available in SQL Server 2012, returns a full datetimeoffset data type as shown in the below query result. The OFFSET argument is basically used to represent the time zone offset value hour and minutes.

SYNTAX: – DATETIMEOFFSETFROMPARTS (YEAR, MONTH, DAY, HOUR, MINUTE, SECONDS,

       FRACTIONS, HOUR_OFFSET, MINUTE_OFFSET, PRECISION) 




/* Using DATETIMEOFFSETFROMPARTS Function */




DECLARE

  @YEAR    INT = 2012

, @MONTH   INT = 01

, @DAY     INT = 09

, @HOUR    INT = 11

, @MINUTE  INT = 59

, @SECONDS INT = 59




SELECT

 DATETIMEOFFSETFROMPARTS (@YEAR, @MONTH, @DAY, @HOUR, @MINUTE,@SECONDS,500, 5, 30, 3)

 AS [Retrieved Data Using DATETIMEOFFSETFROMPARTS Function]

GO




Retrieved Data Using DATETIMEOFFSETFROMPARTS Function

—————————————————–

2012-01-09 11:59:59.500 +05:30

Using EOMONTH Function

The EOMONTH function, which is available in SQL Server 2012, calculates the last date of the month based on the date which is passed as an input parameter.

SYNTAX: – EOMONTH (START_DATE, [, MONTH_TO_ADD ])




/* Using EOMONTH Function */

DECLARE

 @STARTDATE DATETIME = GETDATE()




SELECT EOMONTH (@STARTDATE)  AS ThisMonthLastDay

SELECT EOMONTH (@STARTDATE, 1)  AS NextMonthLastDay

SELECT EOMONTH (@STARTDATE, -1) AS LastMonthLastDay

GO




ThisMonthLastDay

———————–

2011-12-31 00:00:00.000




NextMonthLastDay

———————–

2012-01-31 00:00:00.000




LastMonthLastDay

———————–

2011-11-30 00:00:00.000