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This is a verified interview question from Flipkart-grid-8.0. Candidates reporting seeing this problem in recent Online Assessments (OAs) and onsite rounds. Mastering "SQL" covers key patterns like Other.
"A Hospital Management System (HMS) is a software solution designed to streamline and optimize the administrative and clinical tasks within a healthcare facility. It serves as a centralized platform for managing various aspects of hospital operations, including Patients, Appointments, Doctors, Specialization and Doc_Specialization_Mapping. Task: Write an SQL query to display the FirstName and LastName of all patients who have taken at least one doctor appointment and whose ContactNumber and Email are not provided. Consider a value as not provided when it is NULL, an empty string, or contains only blank spaces. Sort the result in ascending order of FirstName."
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