AdventureWorks Database: Count employees for each city group by using multiple tables
SQL Query - AdventureWorks: Exercise-16 with Solution
16. From the following table write a query in SQL to retrieve the number of employees for each City. Return city and number of employees. Sort the result in ascending order on city.
Sample table: Person.BusinessEntityAddress
SELECT a.City, COUNT(b.AddressID) NoOfEmployees FROM Person.BusinessEntityAddress AS b INNER JOIN Person.Address AS a ON b.AddressID = a.AddressID GROUP BY a.City ORDER BY a.City;
city |noofemployees| ---------------------+-------------+ Abingdon | 1| Albany | 4| Alexandria | 2| Alhambra | 1| Alpine | 1| Altadena | 2| Altamonte Springs | 1| Anacortes | 3| Arlington | 1| Ascheim | 1| Atlanta | 2| Auburn | 1| Augsburg | 2| Augusta | 1| Aujan Mournede | 1| Aurora | 1| Austell | 1| ...
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SQL: Tips of the Day
How to combine date from one field with time from another field - MS SQL Server
You can simply add the two.
- if the Time part of your Date column is always zero
- and the Date part of your Time column is also always zero (base date: January 1, 1900)
Adding them returns the correct result-
SELECT Combined = MyDate + MyTime FROM MyTable
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