LinkedIn linkedin Transact-SQL Assessment Answers 2021 - Latest Answers from LinkedIn Transact-SQL Assessment
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LinkedIn Transact-SQL Assessment Answers

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LinkedIn Transact SQL Assessment Quiz Answers

 

LinkedIn Transact SQL Assessment

 

LinkedIn Transact SQL Assessment Answers

LinkedIn Transact SQL Assessment Answers: LinkedIn skill identifications are a great method to make yourself desirable in a task market that is becoming more and more digital every day. The identifications exist as digital proof of your proficiency in an area of your choice to anyone interested to work with you. You need to take a verification test to get one of these identifications planned as assessment quizzes for the respective skills you are hoping to earn an identification for.

The LinkedIn Transact-SQL Assessment AnswersLinkedIn Skill Assessments feature allows you to demonstrate your knowledge of the skills you’ve added to your profile. Job posters on LinkedIn can also add Skill Assessments as part of the job application process. This allows job posters to more efficiently and accurately verify the crucial skills a candidate should have for a role.

The topics in the LinkedIn Transact-SQL Assessment Answers include:

  • Writing queries
  • Data types
  • SQL syntax
  • Functions
  • Terminology
  • Query results
  • Join statements
  • Constraints, Indexes, and Keys
  • Database administration

Question Format

Multiple Choice

Language

English

LinkedIn T-SQL Assessment Test Questions and Answers

Q1. Which answer is NOT a type of table index?
 
  • nonclustered
  • unique
  • heap
  • hash
Q2. The keywords AND, IN, LIKE, and between all belong to a category called what?
  • joining operations
  • linking operations
  • criteria operations
  • logical operations
Q3. What is the result of this series of statements?
BEGIN TRY
SELECT ‘Foo’ AS Result;
END TRY
BEGIN CATCH
SELECT ‘Bar’ AS Result;
END CATCH
  • Foo
  • FooBar
  • Foo Bar
  • Bar
Q4. Given these two tables, which query generates a listing showing student names and the department office location where you could reach each student?
  • SELECT Students.first_name, Students.last_name, Departments.office_location FROM Students, Departments;
  • SELECT Students.first_name, Students.last_name, Departments.office_location FROM Students JOIN Departments ON Students.department = Departments.department;
  • SELECT Students.first_name, Students.last_name, Departments.office_location FROM Students JOIN Departments;
  • SELECT Students.first_name, Students.last_name, Departments.office_location FROM Students ON Students.department = Departments.department;
Q5. What is an example of a DDL command in SQL?
  • TRUNCATE TABLE
  • DELETE
  • MERGE
  • DROP
Q6. Given the Games, table pictured, which query generates the results shown?
  • SELECT GameType, MaxPlayers, count(*) AS NumberOfGames FROM Games GROUP BY MaxPlayers, GameType ORDER BY MaxPlayers, GameType;
  • SELECT GameType, MaxPlayers, count(*) AS NumberOfGames FROM Games GROUP BY GameType, MaxPlayers ORDER BY GameType;
  • SELECT GameType, count(Players) AS MaxPlayers, NumberOfGames FROM Games GROUP BY GameType, MaxPlayers ORDER BY GameType;
  • SELECT GameType, MaxPlayers, count(*) AS NumberOfGames FROM Games GROUP BY GameType ORDER BY MaxPlayers;
Q7. Which answer is a possible result of the sequence of commands below?
DECLARE @UniqueID uniqueidentifier = NEWID();
SELECT @UniqueID AS Result;
  • 1
  • bb261196-66a5-43af-815d-123fc593cf3a
  • z350mpj1-62lx-40ww-9ho0-4u1875rt2mx4
  • 0x2400001155F04846674AD4590F832C0
Q8. You need to find all students that are not on the “Chemistry Cats” team. Which query does NOT work for this task?
  • SELECT * FROM Students WHERE team NOT ‘Chemistry Cats’;
  • SELECT * FROM Students WHERE team <> ‘Chemistry Cats’;
  • SELECT * FROM Students WHERE team != ‘Chemistry Cats’;
  • SELECT * FROM Students WHERE NOT team = ‘Chemistry Cats’;
Q9. You need to write a query that returns all Employees that have a LastName starting with the letter A. Which WHERE clause should you use to fill in the blank in this query?
  • WHERE LastName = A*
  • WHERE LastName = LIKE ‘%A%’
  • WHERE LastName LIKE ‘A%’
  • WHERE LastName IN (‘A*’)
Q10. Which query shows the first name, department, and team of all students with the two lowest points?
  • SELECT LIMIT(2) first_name, department, team FROM Students ORDER BY points ASC;
  • SELECT TOP(2) first_name, department, team FROM Students ORDER BY points DESC;
  • SELECT TOP(2) WITH TIES first_name, department, team FROM Students ORDER BY points;
  • SELECT BOTTOM(2) first_name, department, team FROM Students ORDER BY points ASC;
the picture of the table is important here and there it can be seen that there are only two values with min points. Secondly, the previous answer was wrong because the order by DESC will put the highest points into the beginning of the result list and TOP(2) will take the first two highest points, and we need the lowest points.
Q11. What is the result of this statement?
SELECT FLOOR(-1234.321)
  • -1234.3
  • -1234
  • -1235
  • 1234.321
Q12. Which is the best approach to update the last name of the student Donette Figgins to Smith
  • UPDATE Students SET last_name = ‘Smith’ WHERE email = ‘dfiggins@rouxacademy.com’;
  • UPDATE Students SET last_name = ‘Figgins’ WHERE email = ‘dfiggins@rouxacademy.com’;
  • UPDATE Students SET last_name = ‘Figgins’ WHERE last_name = ‘Smith’ AND first-name = ‘Donette’;
  • UPDATE Students SET last_name = ‘Smith’ WHERE last_name = ‘Figgins’ AND first-name = ‘Donette’;
Q13. Which of these data types is approximate numeric?
  • real
  • bit
  • decimal
  • numeric
Q14. You need to remove all data from a table named Products. Which query fully logs the removal of each record?
  • TRUNCATE FROM Products *;
  • DELETE FROM Products;
  • DELETE * FROM Products;
  • TRUNCATE TABLE Products;
Q15. What is the result of the following query? SELECT 1 / 2 AS Result;
  • 0.5
  • error
  • 0
  • 2
Q16. which data type will most efficiently store a person’s age in years?
  • float
  • int
  • tinyint
  • bigint
Q17. What is the result of this query?
SELECT ‘abc\
def’ AS Result;
  • abc\def
  • abcdef
  • error
  • abc def
Q18. To select a random student from the table, which statement could you use?
  • SELECT TOP(1) first_name, last_name FROM Students ORDER BY NEWID();
  • SELECT TOP(1) RAND(first_name, last_name) FROM Student;
  • SELECT TOP(1) first_name, last_name FROM Student;
  • SELECT TOP(1) first_name, last_name FROM RAND(Student);
Q19. What result is returned after executing the following commands?
DECLARE @MyVariable int;
SET @MyVariable = 1;
GO
SELECT @MyVariable;
  • error
  • 1
  • null
  • @MyVariable
Q20. Which statement creates a new database schema named Sales and establishes Sharon as the owner?
  • ALTER USER Sharon WITH DEFAULT_SCHEMA = Sales;
  • ALTER USER Sharon SET SCHEMA Sales;
  • CREATE SCHEMA Sales SET OWNER Sharon;
  • CREATE SCHEMA Sales, AUTHORIZATION Sharon;
Q21. The result of a CROSS JOIN between a table with 4 rows, and one with 5 rows, will give with ____ rows.
  • 1024
  • 20
  • 0
  • 9
Q22. You need to write a query that returns all products that have a SerialNumber ending with “10_3”. Which WHERE clause should you use to fill in the blank in this query?
SELECT ProductID, ProductName, SerialNumber
FROM Products______ ;
  • WHERE SerialNumer LIKE ‘%10_3’
  • WHERE SerialNumer LIKE (‘%10’+’_’+’3’)
  • WHERE SerialNumer LIKE ‘%10″_”3’
  • WHERE SerialNumer LIKE ‘%10[_]3’
Q23. When no join type between multiple tables in a query’s FROM clause is specified, what type of join is assumed?
  • INNER
  • RIGHT
  • LEFT
  • FULL
Q24. How many bytes of storage does the int data type consume?
  • 1 byte
  • 2 bytes
  • 4 bytes
  • 8 bytes
Q25. What does a RIGHT JOIN ensure?
  • that only records from the rightmost table will be displayed
  • that no records from the rightmost table are displayed if the records don’t have corresponding records in the left table
  • that records from the rightmost table will be displayed only if the records have a corresponding value in the leftmost table
  • that all records from the rightmost table are represented in the result, even if there are no corresponding records in the left table
Q26. You execute the following three queries. What is the result?
Create table students(id int identity(1000,1), firstname varchar(20),
lastname varchar(30));
insert into students(firstname,lastname)values(‘mark’,’twain’);
select * from students;
  • student id first name Lastname 1 1001 mark twain
  • student id first name Lastname 1 1 mark twain
  • student id first name Lastname 1 1000 mark twain
  • student id first name Lastname 1 null mark twain
Q27. Which Query returns all student names with the highest grade?
create table students( studentname varchar(50), grade int);
  • select student name from students where grade=max(grade);
  • select top(1) student name from students order by grade;
  • select top(1) with ties student name from students order by grade desc;
  • select student name,max(grade) from students order by grade desc;

top(1) with ties will take the highest grade and all other students with the same grade (because they are ordered by grade) and matches the highest grade.

Q28. What role does “inventory” play?
select booked, book title, book author, quantity on hand from inventory. books;
  • you only want to see results from books currently in inventory
  • it instructs the query engine to find the books table in the inventory schema
  • it instructs the query engine to find the books table in the inventory database
  • it instructs the query engine to join the books table to the inventory schema
select * from dbo. books here dbo is a schema and the inventory is also schema; if we’d like to specify a database we should use db_name.schema_name.table_name
Q29. What is the result of an INNER JOIN between table1 and table2?
  • Only records that have corresponding entries in table1 and table2 are displayed.
  • No records from table1 are ever displayed.
  • All records from table1 are displayed, regardless of whether the records have a corresponding row in table2
  • Only records that have no corresponding records in table1 or table2 are displayed.
Q30. To remove all of the content from the Students table but keep the schema, which statement should you use?
  • TRUNCATE TABLE Students;
  • TRUNCATE * FROM Students;
  • DROP TABLE Students;
  • REMOVE * FROM Students;
Q31. Review the CREATE TABLE statement below. When placed in the blank space, which option ensures that the BookISBN column will not contain any duplicate values?
CREATE TABLE Books (
    BookID int PRIMARY KEY,
    BookISBN char(13) NOT NULL _____,
    BookTitle nvarchar(100) NOT NULL
);
  • NO DUPLICATES
  • UNIQUE CONSTRAINT AK_Books_BookISBN
  • DUPLICATE CONSTRAINT (AK_Books_BookISBN)
  • CONSTRAINT AK_Books_BookISBN UNIQUE
Q32. Given a table with the following structure, which query will not return the lowest grade earned by any student?
GREATE TABLE Students (
    StudentName varchar(50),
    Grade int
);
  • SELECT StudentName
          FROM Students
          WHERE Grade = (SELECT MIN(Grade) FROM Student);
  • SELECT TOP(1) Grade
          FROM Students
          ORDER BY Grade;
  • SELECT MIN(Grade)
          FROM Students
          ORDER BY Grade;
  • SELECT MIN(Grade)
           FROM Students
Q33. Given a table with the following structure, which query will not return the lowest grade earned by any student?
T-SQL-Q33
  • UPDATE Students SET last_name=’Smith’, email = ‘dsmith@rouxacademy.com’ WHERE id=’56295’;
  • UPDATE Students SET last_name=’Smith’ AND email = ‘dsmith@rouxacademy.com’ WHERE id=’56295’;
  • UPDATE Students SET last_name=’Smith’ AND email = ‘dsmith@rouxacademy.com’ WHERE id=56295;
  • UPDATE Students SET last_name=’Smith’, email = ‘dsmith@rouxacademy.com’ WHERE id=56295;

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