Practice Activity - Joining SQL Server daily data with irregular periodic data

In this video, we will look at joining daily data with period data where the periods are of different durations.
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You may have some periods which are of irregular duration. For example, you may have a table with holiday data.
In this video, we'll insert the periodic data into the daily data, and then summarise it back to the periods.
If you're working with SQL Server daily data or irregular periodic data, then this practice activity is a great way to learn how to join the data and understand the data better. Watch the video and learn how to join SQL Server daily data to irregular periodic data in just a few quick steps!
Here is the starting code:
DROP TABLE IF EXISTS DailyData
GO
CREATE TABLE DailyData
(EmployeeDate datetime,
EmployeeCount int);
INSERT INTO DailyData
VALUES ('2024-02-01', 5), ('2024-02-02', 2), ('2024-02-03', 5), ('2024-02-04', 7), ('2024-02-05', 8), ('2024-02-06', 7), ('2024-02-07', 4)
, ('2024-02-08', 1), ('2024-02-09', 6), ('2024-02-10', 1), ('2024-02-11', 3), ('2024-02-12', 4), ('2024-02-13', 3), ('2024-02-14', 6)
DROP TABLE IF EXISTS PeriodData
GO
CREATE TABLE PeriodData
(PeriodCommencing date,
PeriodDescription varchar(20))
INSERT INTO PeriodData
VALUES ('2024-01-20', 'Period 1'), ('2024-02-02', 'Period 2'), ('2024-02-10', 'Period 3');
SELECT * FROM DailyData
SELECT * FROM PeriodData
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DP-300: Administering Relational Databases: idodata.com/dp-...
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