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Consider a relation student has Student_id, Student_name, Student_age, Student_Income, Student_address.
Query:
SELECT Student_name AS Name FROM student;
Query:
SELECT Student_name AS Name FROM student;
Q. Which of the following option true for a given SQL query?
- a)Retrieve selected columns
- b)Renaming of columns
- c)Remove primary key from the table
- d)Remove an attribute
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider a relation student has Student_id, Student_name, Student_age,...
The correct answer is option B.
Concept:
Renaming of columns:
In case we want to rename any column while displaying the output, we can do so by using the alias 'AS' in the query as:
Renaming of columns:
In case we want to rename any column while displaying the output, we can do so by using the alias 'AS' in the query as:
Example:
Display Employee name as Name in the output for all the employees.
mysql> SELECT EName AS Name FROM EMPLOYEE;
Display Employee name as Name in the output for all the employees.
mysql> SELECT EName AS Name FROM EMPLOYEE;
Explanation:
The given SQL query is,
The given SQL query is,
Query:
SELECT Student_name AS Name FROM student;
The above is renamed the specific attribute as Student_name. Hence the student relation attribute student_name changes to name.
The database becomes like below,
SELECT Student_name AS Name FROM student;
The above is renamed the specific attribute as Student_name. Hence the student relation attribute student_name changes to name.
The database becomes like below,
Hence the correct answer is the Renaming of columns.
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Consider a relation student has Student_id, Student_name, Student_age, Student_Income, Student_address.Query:SELECT Student_name AS Name FROM student;Q. Which of the following option true for a given SQL query?a)Retrieve selected columnsb)Renaming of columnsc)Remove primary key from the tabled)Remove an attributeCorrect answer is option 'B'. Can you explain this answer?
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Consider a relation student has Student_id, Student_name, Student_age, Student_Income, Student_address.Query:SELECT Student_name AS Name FROM student;Q. Which of the following option true for a given SQL query?a)Retrieve selected columnsb)Renaming of columnsc)Remove primary key from the tabled)Remove an attributeCorrect answer is option 'B'. Can you explain this answer? for Humanities/Arts 2024 is part of Humanities/Arts preparation. The Question and answers have been prepared according to the Humanities/Arts exam syllabus. Information about Consider a relation student has Student_id, Student_name, Student_age, Student_Income, Student_address.Query:SELECT Student_name AS Name FROM student;Q. Which of the following option true for a given SQL query?a)Retrieve selected columnsb)Renaming of columnsc)Remove primary key from the tabled)Remove an attributeCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Humanities/Arts 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider a relation student has Student_id, Student_name, Student_age, Student_Income, Student_address.Query:SELECT Student_name AS Name FROM student;Q. Which of the following option true for a given SQL query?a)Retrieve selected columnsb)Renaming of columnsc)Remove primary key from the tabled)Remove an attributeCorrect answer is option 'B'. Can you explain this answer?.
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