Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The FirstInEncounter column stores a 1 if the reading is the first reading entered in an encounter and a 0 otherwise. Which of the following is a correctly formatted CASE statement?
A. CASE FirstInEncounter WHEN 1 THEN 'Yes' WHEN 0 THEN 'No" ELSE 'Unknown if First' END
B. CASE FirstInEncounter WHEN 1 'Yes' WHEN 0 'No' ELSE 'Unknown if First' END
C. CASE FirstInEncounter IF 1 THEN 'Yes' ELSE IF 0 THEN 'No' ELSE 'Unknown if First' END
D. CASE FirstInEncounter WHEN 1 'Yes' WHEN 0 'No' ELSE 'Unknown if First'
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