DATEFROMPARTS (Transact-SQL)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
This function returns a date value that maps to the specified year, month, and day values.
Transact-SQL syntax conventions
Syntax
DATEFROMPARTS ( year, month, day )
Arguments
year
An integer expression that specifies a year.
month
An integer expression that specifies a month, from 1 to 12.
day
An integer expression that specifies a day.
Return types
date
Remarks
DATEFROMPARTS returns a date value, with the date portion set to the specified year, month and day, and the time portion set to the default. For invalid arguments, DATEFROMPARTS will raise an error. DATEFROMPARTS returns null if at least one required argument has a null value.
This function can handle remoting to SQL Server 2012 (11.x) servers and above. It cannot handle remoting to servers with a version below SQL Server 2012 (11.x).
Examples
This example shows the DATEFROMPARTS function in action.
SELECT DATEFROMPARTS ( 2010, 12, 31 ) AS Result;
Here's the result set.
Result
----------------------------------
2010-12-31
(1 row(s) affected)