CS代考计算机代写 SQL case study database SQL Intermediate
SQL Intermediate Aggregate Functions • • 2 3 Q1. What will be displayed by the following SQL statement? SELECT count(*), count(mark) FROM enrolment; 8, 8 8, 3 3, 3 3, 8 4 Q2. What will be displayed by the following SQL statement? SELECT count(*), count(stu_nbr), count(distinct stu_nbr) FROM enrolment; 8, 8, 4 8, 8, 8 […]
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