83. Specifying Consecutive Months

This advanced SQL exercise is part of the book: Advanced SQL – Practical Techniques and Use-Cases, which includes 100 day-to-day SQL challenges (and solutions), need-to-know advanced features, and key concepts.
 

A company operating an online payments system is developing a new product. To define tasks and timetables, the manager in charge of this development has created the following table:

CREATE TABLE ProductionPhases
(phase_date date,
phase_status varchar(25))
GO

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