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SQL Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to SQL. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Consider the following schema −
STUDENTS(student_code, first_name, last_name, email,
phone_no, date_of_birth, honours_subject, percentage_of_marks);
Which of the following query would display all the students with honours_subject ‘Eng01’?
A - select student_code, first_name, last_name from students where honours_subject = ‘Eng01’;
B - select student_code, first_name, last_name from students where honours_subject is ‘Eng01’;
C - select student_code, first_name, last_name where honours_subject = ‘Eng01’ from students;
D - select student_code, first_name, last_name from students;
Answer : A
Q 2 - What is returned by INSTR(‘TUTORIALS POINT’, ‘P’)?
Answer : A
Q 3 - You want to calculate the tax payable by the employees of an organization. If the employee gets a commission, then the tax would be calculated on commission plus salary, if the employee does not get any commission, then the tax would be calculated on salary only. Which function should you use for calculating tax?
Answer : B
Q 4 - Which of the following functions can be used on both numeric as well as non-numeric data?
Answer : A
Q 5 - Which of the following is not true about a subquery?
A - A subquery is a SELECT statement embedded in a clause of another SELECT statement.
B - The subquery executes before the main query.
C - The result of the main query is returned to the subquery.
Answer : C
Q 6 - Which of the following is true about inserting news rows to a table?
A - You must list values in the default order of the columns in the table.
B - You can also list the columns in the INSERT clause.
C - You can use the INSERT statement to add rows from one table to another.
Answer : D
Q 7 - Which statement allows conditional update, or insertion of data into a table simultaneously?
Answer : B
Q 8 - Which of the following code will successfully delete the table LOCATIONS from the database?
Answer : A
Q 9 - Which of the following statement is used to modify a sequence?
Answer : A
Q 10 - A database administrator can
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