The declaration date is when a company announces its next dividend payment; it's also an option's expiration date. Once a dividend is declared, it becomes the company's legal responsibility to ...
In this lab, you will practice using SQL statements and the .query() method provided by Pandas to manipulate datasets. One of the most common ways to query data with pandas is to simply slice the ...
-- Completion rate by course SELECT CourseID, COUNT(CASE WHEN Status = 'Completed' THEN 1 END) * 100.0 / COUNT(*) AS CompletionRate FROM school_enrollments GROUP BY CourseID; -- Average grade by ...
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