【简答题】Passage Five Questions 22 to 26 are based on the following passage. Plastics are materials which are softened by heat and set into lasting form when shaped in a mold. Some are natural; some are semi-s...
【单选题】Examine the description of the MARKS table: SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects. Examine this SELECT statement based on the MARKS table: What is the result of the ...
A.
The statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject.
B.
The statement returns an error at the SELECT clause.
C.
The statement returns an error at the WHERE clause.
D.
The statement returns an error at the ORDER BY clause.