SQL_Notes/SQL_Basics_Practice.sql at main · rawansheriff/SQL_Notes · GitHub

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Select *
FROM EmployeeDemographics

SELECT *
FROM EmployeeSalary

SELECT Gender
FROM EmployeeDemographics
GROUP BY Gender

SELECT Gender, COUNT(Gender)
FROM EmployeeDemographics
GROUP BY Gender

SELECT *
FROM EmployeeDemographics

SELECT Gender, Age, Count(Gender)
FROM EmployeeDemographics
GROUP BY Gender, Age


SELECT Gender, COUNT(Gender) AS CountGender
FROM EmployeeDemographics
WHERE Age > 31
GROUP BY Gender
ORDER BY CountGender DESC

SELECT Gender, COUNT(Gender) AS CountGender
FROM EmployeeDemographics
WHERE Age > 31
GROUP BY Gender
ORDER BY CountGender


SELECT Gender, COUNT(Gender) AS CountGender
FROM EmployeeDemographics
WHERE Age > 31
GROUP BY Gender
ORDER BY 1 DESC

SELECT *
FROM EmployeeDemographics
ORDER BY Age DESC, Gender DESC

SELECT *
FROM EmployeeDemographics
ORDER BY 4 ASC, 5 DESC

-- labeling the columns with numbers for easier navigations