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Choose the correct option regarding the following query
WITH max_marks (VALUE) AS
(SELECT MAX(marks)
FROM student)
SELECT studentID
FROM student,max_marks
WHERE student.marks = max_marks.value;
WITH max_marks (VALUE) AS
(SELECT MAX(marks)
FROM student)
SELECT studentID
FROM student,max_marks
WHERE student.marks = max_marks.value;
- a)The query is syntactically wrong
- b)The query gives the studentID of the student with the maximum marks
- c)The query gives the maximum marks amongst all the students
- d)The query gives all the studentID values except the student with the maximum marks
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Choose the correct option regarding the following queryWITH max_marks ...
Explanation:
The given query is selecting the studentID from the table "student" based on certain conditions. Let's break down the query and understand its functionality.
1. WITH max_marks (VALUE) AS (SELECT MAX(marks) FROM student)
This part of the query creates a temporary table called "max_marks" with a single column named "VALUE". It selects the maximum value of the "marks" column from the "student" table and assigns it to "max_marks.VALUE".
2. SELECT studentID FROM student, max_marks WHERE student.marks = max_marks.value;
This part of the query selects the studentID from the "student" table based on the following conditions:
- The "marks" column in the "student" table should be equal to the "VALUE" column in the "max_marks" table.
Explanation of the options:
a) The query is syntactically wrong:
This option is incorrect as the query is syntactically correct. It follows the standard SQL syntax and does not contain any obvious syntax errors.
b) The query gives the studentID of the student with the maximum marks:
This option is correct. The query selects the studentID from the "student" table where the marks are equal to the maximum marks obtained by any student. In other words, it retrieves the studentID of the student with the maximum marks.
c) The query gives the maximum marks amongst all the students:
This option is incorrect. The query does not directly retrieve the maximum marks. It retrieves the studentID of the student with the maximum marks, but not the actual maximum marks value itself.
d) The query gives all the studentID values except the student with the maximum marks:
This option is incorrect. The query specifically selects the studentID of the student with the maximum marks, not all the studentID values except the one with the maximum marks.
Conclusion:
Based on the explanation above, option 'b' is the correct answer. The query retrieves the studentID of the student with the maximum marks.
The given query is selecting the studentID from the table "student" based on certain conditions. Let's break down the query and understand its functionality.
1. WITH max_marks (VALUE) AS (SELECT MAX(marks) FROM student)
This part of the query creates a temporary table called "max_marks" with a single column named "VALUE". It selects the maximum value of the "marks" column from the "student" table and assigns it to "max_marks.VALUE".
2. SELECT studentID FROM student, max_marks WHERE student.marks = max_marks.value;
This part of the query selects the studentID from the "student" table based on the following conditions:
- The "marks" column in the "student" table should be equal to the "VALUE" column in the "max_marks" table.
Explanation of the options:
a) The query is syntactically wrong:
This option is incorrect as the query is syntactically correct. It follows the standard SQL syntax and does not contain any obvious syntax errors.
b) The query gives the studentID of the student with the maximum marks:
This option is correct. The query selects the studentID from the "student" table where the marks are equal to the maximum marks obtained by any student. In other words, it retrieves the studentID of the student with the maximum marks.
c) The query gives the maximum marks amongst all the students:
This option is incorrect. The query does not directly retrieve the maximum marks. It retrieves the studentID of the student with the maximum marks, but not the actual maximum marks value itself.
d) The query gives all the studentID values except the student with the maximum marks:
This option is incorrect. The query specifically selects the studentID of the student with the maximum marks, not all the studentID values except the one with the maximum marks.
Conclusion:
Based on the explanation above, option 'b' is the correct answer. The query retrieves the studentID of the student with the maximum marks.
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Community Answer
Choose the correct option regarding the following queryWITH max_marks ...
The query gives the studentID with the maximum marks because the max(marks) aggregation gives the maximum of the marks.
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Choose the correct option regarding the following queryWITH max_marks (VALUE) AS(SELECT MAX(marks)FROM student)SELECT studentIDFROM student,max_marksWHERE student.marks = max_marks.value;a)The query is syntactically wrongb)The query gives the studentID of the student with the maximum marksc)The query gives the maximum marks amongst all the studentsd)The query gives all the studentID values except the student with the maximum marksCorrect answer is option 'B'. Can you explain this answer?
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ample number of questions to practice Choose the correct option regarding the following queryWITH max_marks (VALUE) AS(SELECT MAX(marks)FROM student)SELECT studentIDFROM student,max_marksWHERE student.marks = max_marks.value;a)The query is syntactically wrongb)The query gives the studentID of the student with the maximum marksc)The query gives the maximum marks amongst all the studentsd)The query gives all the studentID values except the student with the maximum marksCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
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