Скачать или смотреть GATE 2015 SET-1 | DBMS | SQL QUERY | SOLUTIONS ADDA | GATE TEST SERIES | EXPLAINED BY VIVEK

GATE 2015 SET-1 Q47: Consider the following relations:
Consider the following SQL query.
SELECT S. Student_Name, sum(P.Marks)
FROM Student S, Performance P
WHERE S.Roll_No = P.Roll_No
GROUP BY S.Student_Name
The number of rows that will be returned by the SQL query is _________.

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