Using the university schema, use SQL to do the following: For each student who has retaken a
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Using the university schema, use SQL to do the following: For each student who has retaken a course at least twice (i.e., the student has taken the course at least three times), show the course ID and the student’s ID. Please display your results in order of course ID and do not display duplicate rows.
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Related Book For 
Database System Concepts
ISBN: 9780078022159
7th Edition
Authors: Abraham Silberschatz, Henry F. Korth, S. Sudarshan
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