How to calculate age based on 2 dates in SQL Server
Often working with SQL server, we need to calculate the difference between 2 dates. We can get this done easily by using the DATEDIFF() function. Sometimes, we also need to calculate the age of a person on a specific date in SQL Server. SQL Server does not provide a direct function to do this. Today, we will resolve this issue. Let us take an example –
Now, let us use the DATEDIFF() to get the difference between dates in number of years. To do this, we will use the below query-
Select MemberId, DateOfBirth, DATEDIFF(YY,DateOfBirth,GETDATE()) AS NumberOfYears FROM Table1
Run the below query and notice the output below the query –
Select MemberId, DateOfBirth, DATEDIFF(YY,DateOfBirth,GETDATE()) AS NumberOfYears,(CONVERT(int, CONVERT(varchar, GETDATE(), 112)) - CONVERT(int, CONVERT(varchar, DateOfBirth, 112)))/10000 AS RevisedNumberOfYears FROM Table1
I hope this post helps you. Please let me know your thoughts via comments.