SQL Assignment
1.
What does SQL stand for? Structured Question Language Structured Query Language Strong Question Language
2. Which SQL statement is used to extract data from a database?
OPEN GET EXTRACT SELECT
3. Which SQL statement is used to update data in a database?
SAVE UPDATE MODIFY SAVE AS
4. Which SQL statement is used to delete data from a database?
REMOVE DELETE COLLAPSE
5. Which SQL statement is used to insert new data in a database?
ADD NEW INSERT INTO ADD RECORD INSERT NEW
6. With SQL, how do you select a column named "FirstName" from a table named "Persons"?
EXTRACT FirstName FROM Persons SELECT Persons.FirstName SELECT FirstName FROM Persons 7. With SQL, how do you select all the columns from a table named "Persons"?
SELECT Persons SELECT [all] FROM Persons SELECT *.Persons SELECT * FROM Persons
8. With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" is "Peter"?
SELECT * FROM Persons WHERE FirstName='Peter' SELECT [all] FROM Persons WHERE FirstName='Peter' SELECT * FROM Persons WHERE FirstName LIKE 'Peter' SELECT [all] FROM Persons WHERE FirstName LIKE 'Peter'
9. With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" starts with an "a"?
SELECT * FROM Persons WHERE FirstName='%a%' SELECT * FROM Persons WHERE FirstName='a' SELECT * FROM Persons WHERE FirstName LIKE '%a' SELECT * FROM Persons WHERE FirstName LIKE 'a%'
10. The OR operator displays a record if ANY conditions listed are true. The AND operator displays a record if ALL of the conditions listed are true
False True 12. With SQL, how do you select all the records from from a table named "Persons" where the "LastName" is alphabetically between (and including) "Hansen" and "Pettersen"? SELECT * FROM Persons WHERE LastName>'Hansen' AND LastName<'Pettersen'
SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND 'Pettersen' SELECT LastName>'Hansen' AND LastName<'Pettersen' FROM Persons 13. Which SQL statement is used to return only different values?
SELECT UNIQUE SELECT DIFFERENT SELECT DISTINCT 14. Which SQL keyword is used to sort the result-set? SORT SORT BY ORDER BY ORDER 15. With SQL, how can you return all the records records from a table named named "Persons" sorted descending by "FirstName"? SELECT * FROM Persons ORDER BY FirstName DESC SELECT * FROM Persons ORDER FirstName DESC SELECT * FROM Persons SORT BY 'FirstName' DESC SELECT * FROM Persons SORT 'FirstName' 'FirstName' DESC 16. With SQL, how can you insert a new record into the "Persons" table? INSERT VALUES ('Jimmy', 'Jackson') INTO Persons INSERT INSERT ('Jimmy', 'Jackson') INTO Persons INSERT INTO Persons VALUES ('Jimmy', 'Jackson') . 17. With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table?
INSERT INSERT INTO Persons ('Olsen') INTO LastName INSERT INTO Persons (LastName) VALUES ('Olsen') INSERT INSERT ('Olsen') INTO Persons (LastName) 18. How can you change "Hansen" "Hansen" into "Nilsen" in the "LastName" column in the Persons table? UPDATE UPDATE Persons SET LastName='Nilsen' WHERE LastName='Hansen' MODIFY Persons SET LastName='Hansen' INTO LastName='Nilsen UPDATE UPDATE Persons SET LastName='Hansen' INTO LastName='Nilsen' MODIFY Persons SET LastName='Nilsen' WHERE LastName='Hansen'
19. With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table?
DELETE FirstName='Peter' FROM Persons DELETE FROM Persons WHERE FirstName = 'Peter' DELETE ROW FirstName='Peter' FROM Persons 20. With SQL, how can you return the number of records in the "Persons" table? SELECT COLUMNS() FROM Persons SELECT COUNT() FROM Persons SELECT COLUMNS(*) FROM Persons SELECT COUNT(*) FROM Persons .
Theoritical Questions:
What is SQL and where does it come from? What are the difference between DDL, DML and DCL commands? How does one escape characters when building SQL queries? How does one eliminate duplicate rows from a table? How does one generate primary key values for a table? How does one get the time ti me difference between two date columns? How does one add a day/hour/minute/se day/hour/minute/second cond to a date value? How does one count different data values in a column? How does one count/sum RANGES of data values in a column? Can one retrieve only the Nth row from a table? Can one retrieve only rows X to Y from a table? How does one select EVERY Nth row from a table? How does one select the TOP N rows from a table? How does one code a tree-structured query? How does one code a matrix report in SQL? How does one implement IF-THEN-ELSE IF-THEN-ELSE in a select statement? How can one dump/ examine the exact content of a database column? Can one drop a column from a table? Can one rename a column in a table? How does one find the next value of a sequence?
Queries: Dept Deptno 10
Dname
Loc
ACCOUNT
Mumbai
20
ADMIN
Banglore
30
IT
Chennai
Emp Empno
Ename
Job
Salary
Comm
Hi Hiredate
Deptno
11999
SCOTT
MANAGER
45000
0
12 1 2-Jan-00
10
12000
BLACK
ACCOUNTANT
20000
1500
13-Feb-00
10
12001
SMITH
ASS ACCOUNTANT
15000
1200
24-Jan-00
10
12002
KING
OPERATOR
8000
1200
15 1 5-Mar-00
20
12003
RED
SN OPERATOR
10000
0
16-Apr-00
20
12004
KAT
35000
0
17-Nov-00
30
1200 12005 5
MICH MICHLE LE
25000
0
18-Jan-00
30
1200 12006 6
MAKD MAKD
SOFTWARE ENGINEER ASS SOFTARE ENGINEER DATA ENTRY OPERATOR
9000
0
1-Jan-00
20
Experience 20 13 7 1 2 3 2 1
SQL Level –1 1)Write a query to list all the employees who are working as clerk 2) Write a query to list the employees who are working as clerks or managers with the minimum salary of 4000 3) Write a query to get the current date 4) Write a query o list the employees who are having experience more than 4 years 5) Write a query to list the employees who hired in the last seven days 6) Write a query to list the employees whose salaries are within the range of 5000 and 10000 7) Write a query to list the employees who have joined in the month of March’99 8) Write a query to list the employees whose salaries are not within the range of 10000 and 13000 9) Write a query who are getting 1000, 2000, 3000 10) Query to list all employees except who are joined on 11- Sep-2001, 31-Mar-2002 11) To list all the employees whose names are having ‘O’ as second character 12) To list character 13) To list as length. 14) To list ending with
all the employees whose names are having ‘R’ as last all the employees whose names are having just 5 characters all the employees whose names are starting with ‘O’
‘R’ and
Write The Following Queries For The Above Tables:
A) Display the all records of the employee’s table. B) Display the employee name, salary, and commission of those Employee’s salaries Higher than 1500. C) Display the employee name, salary, job and commission of those Employee’s commission is null. D) Display the employee’s name, employee number, salary, job and Commission Of that Employee’s salary higher than Scott’s salary. E) Write inner-joining Query. F) Write the Outer-joining Query. G) Display Department name, location and employee name of those Employee’s who work in Account Department. H) Display name, job, salary of those employees who is salary’s 1rd highest I) Display name, job, salary of those employees who is salary’s 1 rd lowest Salary among all employees’ salaries. J) Display name, job,salary of those employees who work Mr.KAT Employee. K) Display name,job,salary of those employee who is not work with Mr. KAT L) Display the Department name, employee name and salary from emplyee tables. M) Show the sum of salaries of all department but sum of salary must be Greater than 8500. N) Write the the query display the Department Department names names and their employee’s names. O) Display the all employees name, job and salary they work in department 10. P) Display the all records their salaries must be higher than Clerk Salaries. Q) Show the records of the all employees their last letter’ H in the name. R) Sum salaries of the all employees according to the job. S) Increase the 10% of Salary who work in Account Department.
T) Delete the all employee who work in the Scott Department. U) Assign the scott salary who work in the department 10. V) Delete Delete
the all records their their salaries salaries higher higher than 1500;
W) Display the highest salary and his name from employee table. X) splay the Lowest salary and his name from employee table. Y) Display the highest salary from Account Department. Z) Display the lowest salary from Account Department. AA) Assign the highest salary to the scott employee. AB) Assign the lowest salary the the scott employee. AC) Assign the 10 % of salary to every employee of commission. AD) Display the all records their commission is null.
