Break out a date into year, month, and day
SQL Server has a number of functions dedicated to working with date types. We will first analyze three functions which return integers representing the year, month, and day of month, respectively.
These functions can allow us to group dates together, letting us calculate running totals by year or month-over-month comparisons of expenditures. We could also analyze sales by calendar day of the month to determine if there is a strong monthly cycle.
This exercise is part of the course
Time Series Analysis in SQL Server
Exercise instructions
- Use the
YEAR(),MONTH(), andDAY()functions to determine the year, month, and day for the current date and time.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
DECLARE
@SomeTime DATETIME2(7) = SYSUTCDATETIME();
-- Retrieve the year, month, and day
SELECT
___(@SomeTime) AS TheYear,
___(@SomeTime) AS TheMonth,
___(@SomeTime) AS TheDay;