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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

What will be the output of the following MySQL statement “false OR Null”?(a) True(b) Null(c) False(d) None of the mentionedThe question was asked by my college director while I was bunking the class.Enquiry is from The from Clauses in portion Select Statement of MySQL

Answer» RIGHT CHOICE is (B) Null

Easiest EXPLANATION: NONE.
2.

Which Keyword is used to remove duplicate rows in the result set?(a) DISTINCTS(b) MODIFY(c) DISTINCT(d) All of the mentionedI have been asked this question during an interview for a job.I'd like to ask this question from The select Clauses in section Select Statement of MySQL

Answer» RIGHT CHOICE is (a) DISTINCTS

Explanation: NONE.
3.

Find odd one out?(a) GROUP BY(b) DESC(c) ASC(d) ORDER BYThis question was addressed to me by my school teacher while I was bunking the class.The above asked question is from The order by Clauses in section Select Statement of MySQL

Answer» RIGHT answer is (a) GROUP BY

Best explanation: “ORDER BY”, “DESC”, “ASC” are related to SORTING whereas “GROUP BY” is not related to sorting.
4.

How can we define the clause “FROM” in Mysql?(a) It defines the tables used by a query(b) It defines the linking of tables in Mysql(c) It defines the tables used by a query & linking of tables in Mysql(d) None of the mentionedThis question was posed to me in quiz.Origin of the question is The from Clauses in chapter Select Statement of MySQL

Answer»

Correct choice is (C) It defines the tables used by a QUERY & LINKING of tables in Mysql

Explanation: None.

5.

Which clause is mandatory with clause “SELECT” in Mysql?(a) FROM(b) WHERE(c) Both FROM and WHERE(d) None of the mentionedI have been asked this question in my homework.The doubt is from The select Clauses topic in chapter Select Statement of MySQL

Answer»

The CORRECT option is (a) FROM

For EXPLANATION I WOULD say: “SELECT” clause cannot be used without clause “FROM”.

6.

Which of the following statements is/are correct with respect to “VIEW”?(a) “VIEW”is a query that stored in the data dictionary(b) There is no data associated with “VIEW”(c) “VIEW” creates virtual tables in Database(d) All of the mentionedThe question was asked during an interview.My question is taken from The from Clauses in chapter Select Statement of MySQL

Answer»

The CORRECT ANSWER is (d) All of the mentioned

Best EXPLANATION: NONE.

7.

“CREATE VIEW …” command is used to create which type of table in Mysql?(a) Permanent Tables(b) Virtual tables(c) Temporary tables(d) All of the mentionedI have been asked this question in an international level competition.My question comes from The from Clauses topic in division Select Statement of MySQL

Answer»

The correct answer is (B) Virtual tables

Explanation: CREATE VIEW is USED to create virtual tables.

8.

“CREATE TABLE …” command is used to create which type of table in Mysql?(a) Permanent Tables(b) Virtual tables(c) Temporary tables(d) All of the mentionedI got this question in an interview for job.The origin of the question is The from Clauses in portion Select Statement of MySQL

Answer»

Correct OPTION is (a) PERMANENT Tables

The best I can EXPLAIN: CREATE table is used to create permanent tables in database.

9.

Which among the following can also be included with “SELECT” clause while writing query in Mysql?(a) Literals(b) Expressions(c) User defined functions(d) All of the mentionedI got this question in a national level competition.I need to ask this question from The select Clauses in portion Select Statement of MySQL

Answer»

Correct answer is (d) All of the mentioned

The best explanation: “SELECT clause” can ALSO INCLUDE LITERALS like ‘ACTIVE’, Expressions like emp_id*314, Built_in functions like UPPER ().

10.

What is the meaning of “ORDER BY” clause in Mysql?(a) Sorting your result set using column data(b) Aggregation of fields(c) Sorting your result set using row data(d) None of the mentionedI had been asked this question in homework.Query is from The order by Clauses in portion Select Statement of MySQL

Answer» RIGHT CHOICE is (a) Sorting your result set using column data

Easiest EXPLANATION: NONE.
11.

Which among the following belongs to an “aggregate function”?(a) COUNT(b) UPPER(c) LOWER(d) All of the mentionedI got this question during an interview for a job.This interesting question is from The group by & having Clause topic in section Select Statement of MySQL

Answer»

The CORRECT CHOICE is (a) COUNT

The BEST I can EXPLAIN: NONE.

12.

Which keyword is used for sorting the data in ascending order in Mysql?(a) DESC(b) ASC(c) ALTER(d) MODIFYI have been asked this question in examination.I would like to ask this question from The order by Clauses in portion Select Statement of MySQL

Answer»

The CORRECT CHOICE is (B) ASC

To explain I would SAY: None.

13.

Which of the following belongs to an “aggregate function”?(a) COUNT(b) SUM/AVG(c) MIN/MAX(d) All of the mentionedThis question was posed to me in an international level competition.My enquiry is from The group by & having Clause in section Select Statement of MySQL

Answer» RIGHT ANSWER is (d) All of the mentioned

Easiest EXPLANATION: NONE.
14.

Which clause is similar to “HAVING” clause in Mysql?(a) SELECT(b) WHERE(c) FROM(d) None of the mentionedThe question was posed to me in class test.Query is from The group by & having Clause in chapter Select Statement of MySQL

Answer»

Correct ANSWER is (B) WHERE

Explanation: “WHERE” is ALSO used to filter the row values in Mysql.

15.

What will be the output of the following MySQL statement “Null OR Null”?(a) True(b) Null(c) False(d) None of the mentionedThe question was posed to me during an online interview.This interesting question is from The from Clauses topic in division Select Statement of MySQL

Answer»

The correct ANSWER is (B) Null

To EXPLAIN I would SAY: NONE.

16.

Which of the following clause is evaluated in the last by database server?(a) SELECT(b) WHERE(c) FROM(d) None of the mentionedI got this question during an interview.The origin of the question is The select Clauses in section Select Statement of MySQL

Answer»

Correct choice is (a) SELECT

Best explanation: “SELECT” clause is USED to show all ROWS or columns therefore it evaluated at last.

17.

Which keyword is used for sorting the data in descending order in Mysql?(a) DESC(b) ASC(c) ALTER(d) MODIFYI have been asked this question during an online interview.My question is from The order by Clauses in chapter Select Statement of MySQL

Answer» RIGHT OPTION is (a) DESC

Easiest EXPLANATION: NONE.
18.

What is the meaning of “GROUP BY” clause in Mysql?(a) Group data by column values(b) Group data by row values(c) Group data by column and row values(d) None of the mentionedI have been asked this question in a job interview.My query is from The group by & having Clause topic in section Select Statement of MySQL

Answer»

The correct ANSWER is (a) Group DATA by COLUMN values

The EXPLANATION is: NONE.

19.

What is the use of “VIEW” in Mysql?(a) To hide columns from the users(b) To hide the complexity of the database(c) To simplify complexity of database design(d) All of the mentionedThe question was posed to me by my school principal while I was bunking the class.My doubt stems from The from Clauses in portion Select Statement of MySQL

Answer»

Right ANSWER is (d) All of the mentioned

For explanation I WOULD SAY: None.

20.

What is the need of “column Aliases” in “SELECT” clause?(a) To assign a new label to the column in result set(b) To overwrite the existing column name in result set(c) To modify the column name while using literals, Expression, built_in functions with “SELECT clause(d) All of the mentionedI have been asked this question in semester exam.I'd like to ask this question from The select Clauses in division Select Statement of MySQL

Answer»

Right answer is (d) All of the mentioned

The BEST EXPLANATION: “COLUMN Aliases” are used to ASSIGN a new label to the columns in the result SET without actually changing the column name.

21.

“COUNT” keyword belongs to which categories in Mysql?(a) Aggregate functions(b) Operators(c) Clauses(d) All of the mentionedI have been asked this question during an internship interview.The origin of the question is The group by & having Clause in division Select Statement of MySQL

Answer»

The CORRECT OPTION is (a) AGGREGATE functions

Explanation: NONE.

22.

What will be the output of the following MySQL statement “true OR Null”?(a) True(b) Null(c) False(d) None of the mentionedThis question was posed to me in an internship interview.This interesting question is from The from Clauses topic in division Select Statement of MySQL

Answer» CORRECT OPTION is (a) True

For explanation I WOULD SAY: NONE.
23.

What will be the output of the following MySQL statement “Null AND Null”?(a) True(b) Null(c) False(d) None of the mentionedI have been asked this question during an interview.Query is from The from Clauses topic in section Select Statement of MySQL

Answer» CORRECT OPTION is (B) Null

Explanation: NONE.
24.

What will be the output of the following MySQL statement “true AND Null”?(a) True(b) Null(c) Depend(d) None of the mentionedThis question was addressed to me during an interview.My doubt is from The from Clauses topic in section Select Statement of MySQL

Answer» RIGHT OPTION is (B) Null

For EXPLANATION: NONE.
25.

What will be the output of the following MySQL statement “false AND Null”?(a) False(b) Null(c) Depend(d) None of the mentionedThis question was posed to me in a job interview.Query is from The from Clauses topic in portion Select Statement of MySQL

Answer» CORRECT CHOICE is (B) Null

Best EXPLANATION: NONE.
26.

Which command is used to create “Temporary tables” in MySQL?(a) CREATE TABLE;(b) CREATE VIEW(c) Both CREATE TABLE; and CREATE VIEW(d) None of the mentionedThis question was addressed to me during an internship interview.The question is from The from Clauses topic in portion Select Statement of MySQL

Answer» CORRECT OPTION is (d) None of the mentioned

Easiest explanation: “Temporary Tables” are output FORMAT of any QUERY.
27.

Which among the following is an optional Keyword?(a) DISTINICTS(b) ALL(c) AS(d) Both AS and ALLI got this question during an interview.I'd like to ask this question from The select Clauses topic in section Select Statement of MySQL

Answer» CORRECT ANSWER is (d) Both AS and ALL

The EXPLANATION: “AS” and “ALL” are OPTIONAL.
28.

What is the meaning of “Temporary Tables” in Mysql?(a) Rows returned by sub query(b) Permanent tables(c) Virtual tables(d) All of the mentionedThis question was posed to me in exam.Asked question is from The from Clauses topic in division Select Statement of MySQL

Answer»

The CORRECT CHOICE is (a) Rows returned by sub query

Explanation: “TEMPORARY TABLES” are output format of any query on MYSQL.

29.

Can “SELECT” clause be used without the clause “FROM”?(a) YES(b) NO(c) DEPENDS(d) None of the mentionedI had been asked this question at a job interview.This intriguing question comes from The select Clauses in section Select Statement of MySQL

Answer»

Right choice is (b) NO

Best explanation: “SELECT” clause is USED to show ROWS and columns of a PARTICULAR table and clause “from” is used to DENOTE atable name.

30.

Keyword “ASC” and “DESC” cannot be used without which clause in Mysql?(a) ORDER BY(b) GROUP BY(c) SELECT(d) HAVINGThe question was posed to me by my college professor while I was bunking the class.This question is from The order by Clauses in section Select Statement of MySQL

Answer»

Right option is (a) ORDER BY

The best explanation: “ASC” or “DESC” are used to sort the result SET in ASCENDING or DESCENDING order therefore they cannot be used without “ORDER BY” CLAUSE.

31.

Which clause is used with an “aggregate functions”?(a) GROUP BY(b) SELECT(c) WHERE(d) Both GROUP BY and WHEREThe question was posed to me in semester exam.My query is from The group by & having Clause topic in section Select Statement of MySQL

Answer»

The CORRECT choice is (a) GROUP BY

The BEST EXPLANATION: “GROUP BY” is used with aggregate FUNCTIONS.

32.

What is the meaning of “HAVING” clause in Mysql?(a) To filter out the row values(b) To filter out the column values(c) To filter out the row and column values(d) None of the mentionedThe question was asked during an interview for a job.The origin of the question is The group by & having Clause in portion Select Statement of MySQL

Answer»

Right choice is (a) To FILTER out the ROW values

The EXPLANATION is: NONE.

33.

“SELECT” clause cannot be used without which clause in Mysql?(a) FROM(b) WHERE(c) ORDER BY(d) All of the mentionedThis question was posed to me by my school principal while I was bunking the class.This interesting question is from The from Clauses in division Select Statement of MySQL

Answer»

The CORRECT option is (a) FROM

Easy explanation: “FROM” CLAUSE is NECESSARY to point out TABLES in the database.

34.

Which of the following table exist in Mysql?(a) Permanent Tables(b) Virtual tables(c) Temporary tables(d) All of the mentionedThis question was posed to me by my college professor while I was bunking the class.This interesting question is from The from Clauses in section Select Statement of MySQL

Answer» RIGHT ANSWER is (d) All of the mentioned

Explanation: DEPENDS on the QUERY.
35.

Is “GROUP BY” clause is similar to “ORDER BY” clause?(a) Yes(b) No(c) Depends(d) None of the mentionedI had been asked this question at a job interview.This question is from The order by Clauses in division Select Statement of MySQL

Answer»

Correct option is (b) No

For EXPLANATION I would say: “ORDER BY” clause is used for SORTING while “GROUP BY” clause is used for aggregation of FIELDS.

36.

What is the meaning of the “WHERE” clause in Mysql?(a) Filtering out unwanted rows from result set(b) Filtering out unwanted columns from result set(c) Filtering out unwanted rows and columns from result set(d) None of the mentionedI had been asked this question in my homework.Question is taken from The Where Clauses topic in division Select Statement of MySQL

Answer»

The correct OPTION is (a) Filtering out unwanted rows from RESULT set

Best EXPLANATION: NONE.

37.

What will be the output of the following MySQL statement “NOT (Null)”?(a) True(b) Null(c) False(d) None of the mentionedI had been asked this question in homework.My doubt stems from The from Clauses in portion Select Statement of MySQL

Answer» RIGHT OPTION is (B) Null

Easiest EXPLANATION: NONE.
38.

What is the meaning of “SELECT” clause in Mysql?(a) Show me all Columns and rows(b) Show me all columns(c) Show me all rows(d) None of the mentionedI have been asked this question by my college professor while I was bunking the class.This question is from The select Clauses in section Select Statement of MySQL

Answer» RIGHT OPTION is (a) SHOW me all Columns and rows

To explain I WOULD say: None.