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SQL Exercises, Practice, Solution - Retrieve data from tables

SQL [33 exercises with solution]

[An editor is available at the bottom of the page to write and execute the scripts. Go to the editor]

1. Write a SQL statement that displays all the information about all salespeople.

Sample table: salesman

 salesman_id |    name    |   city   | commission 
-------------+------------+----------+------------
        5001 | James Hoog | New York |       0.15
        5002 | Nail Knite | Paris    |       0.13
        5005 | Pit Alex   | London   |       0.11
        5006 | Mc Lyon    | Paris    |       0.14
        5007 | Paul Adam  | Rome     |       0.13
        5003 | Lauson Hen | San Jose |       0.12

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2. Write a SQL statement to display a string "This is SQL Exercise, Practice and Solution". 
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3. Write a SQL query to display three numbers in three columns. 
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4. Write a SQL query to display the sum of two numbers 10 and 15 from the RDBMS server. 
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5. Write an SQL query to display the result of an arithmetic expression. 
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6. Write a SQL statement to display specific columns such as names and commissions for all salespeople.  
Sample table: salesman

 salesman_id |    name    |   city   | commission 
-------------+------------+----------+------------
        5001 | James Hoog | New York |       0.15
        5002 | Nail Knite | Paris    |       0.13
        5005 | Pit Alex   | London   |       0.11
        5006 | Mc Lyon    | Paris    |       0.14
        5007 | Paul Adam  | Rome     |       0.13
        5003 | Lauson Hen | San Jose |       0.12

Click me to see the solution with visual presentation

7. Write a query to display the columns in a specific order, such as order date, salesman ID, order number, and purchase amount for all orders.  
Sample table: orders

ord_no      purch_amt   ord_date    customer_id  salesman_id
----------  ----------  ----------  -----------  -----------
70001       150.5       2012-10-05  3005         5002
70009       270.65      2012-09-10  3001         5005
70002       65.26       2012-10-05  3002         5001
70004       110.5       2012-08-17  3009         5003
70007       948.5       2012-09-10  3005         5002
70005       2400.6      2012-07-27  3007         5001
70008       5760        2012-09-10  3002         5001
70010       1983.43     2012-10-10  3004         5006
70003       2480.4      2012-10-10  3009         5003
70012       250.45      2012-06-27  3008         5002
70011       75.29       2012-08-17  3003         5007
70013       3045.6      2012-04-25  3002         5001

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8. From the following table, write a SQL query to identify the unique salespeople ID. Return salesman_id. 

Sample table: orders

ord_no      purch_amt   ord_date    customer_id  salesman_id
----------  ----------  ----------  -----------  -----------
70001       150.5       2012-10-05  3005         5002
70009       270.65      2012-09-10  3001         5005
70002       65.26       2012-10-05  3002         5001
70004       110.5       2012-08-17  3009         5003
70007       948.5       2012-09-10  3005         5002
70005       2400.6      2012-07-27  3007         5001
70008       5760        2012-09-10  3002         5001
70010       1983.43     2012-10-10  3004         5006
70003       2480.4      2012-10-10  3009         5003
70012       250.45      2012-06-27  3008         5002
70011       75.29       2012-08-17  3003         5007
70013       3045.6      2012-04-25  3002         5001

Click me to see the solution with visual presentation

9. From the following table, write a SQL query to locate salespeople who live in the city of 'Paris'. Return salesperson's name, city. 

Sample table: salesman

 salesman_id |    name    |   city   | commission 
-------------+------------+----------+------------
        5001 | James Hoog | New York |       0.15
        5002 | Nail Knite | Paris    |       0.13
        5005 | Pit Alex   | London   |       0.11
        5006 | Mc Lyon    | Paris    |       0.14
        5007 | Paul Adam  | Rome     |       0.13
        5003 | Lauson Hen | San Jose |       0.12

Click me to see the solution with visual presentation

10. From the following table, write a SQL query to find customers whose grade is 200. Return customer_id, cust_name, city, grade, salesman_id.  

Sample table: customer

 customer_id |   cust_name    |    city    | grade | salesman_id 
-------------+----------------+------------+-------+-------------
        3002 | Nick Rimando   | New York   |   100 |        5001
        3007 | Brad Davis     | New York   |   200 |        5001
        3005 | Graham Zusi    | California |   200 |        5002
        3008 | Julian Green   | London     |   300 |        5002
        3004 | Fabian Johnson | Paris      |   300 |        5006
        3009 | Geoff Cameron  | Berlin     |   100 |        5003
        3003 | Jozy Altidor   | Moscow     |   200 |        5007
        3001 | Brad Guzan     | London     |       |        5005

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11. From the following table, write a SQL query to find orders that are delivered by a salesperson with ID. 5001. Return ord_no, ord_date, purch_amt.  

Sample table: orders

ord_no      purch_amt   ord_date    customer_id  salesman_id
----------  ----------  ----------  -----------  -----------
70001       150.5       2012-10-05  3005         5002
70009       270.65      2012-09-10  3001         5005
70002       65.26       2012-10-05  3002         5001
70004       110.5       2012-08-17  3009         5003
70007       948.5       2012-09-10  3005         5002
70005       2400.6      2012-07-27  3007         5001
70008       5760        2012-09-10  3002         5001
70010       1983.43     2012-10-10  3004         5006
70003       2480.4      2012-10-10  3009         5003
70012       250.45      2012-06-27  3008         5002
70011       75.29       2012-08-17  3003         5007
70013       3045.6      2012-04-25  3002         5001

Click me to see the solution with result

12. From the following table, write a SQL query to find the Nobel Prize winner(s) for the year 1970. Return year, subject and winner. 

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

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13. From the following table, write a SQL query to find the Nobel Prize winner in ‘Literature’ for 1971. Return winner. 

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

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14. From the following table, write a SQL query to locate the Nobel Prize winner ‘Dennis Gabor'. Return year, subject. 

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

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15. From the following table, write a SQL query to find the Nobel Prize winners in the field of ‘Physics’ since 1950. Return winner. 

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

16. From the following table, write a SQL query to find the Nobel Prize winners in ‘Chemistry’ between the years 1965 and 1975. Begin and end values are included. Return year, subject, winner, and country.  

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

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17. Write a SQL query to display all details of the Prime Ministerial winners after 1972 of Menachem Begin and Yitzhak Rabin.  

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

18. From the following table, write a SQL query to retrieve the details of the winners whose first names match with the string ‘Louis’. Return year, subject, winner, country, and category.  

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

19. From the following table, write a SQL query that combines the winners in Physics, 1970 and in Economics, 1971. Return year, subject, winner, country, and category. 

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

20. From the following table, write a SQL query to find the Nobel Prize winners in 1970 excluding the subjects of Physiology and Economics. Return year, subject, winner, country, and category. 

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

21. From the following table, write a SQL query to combine the winners in 'Physiology' before 1971 and winners in 'Peace' on or after 1974. Return year, subject, winner, country, and category. 

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

22. From the following table, write a SQL query to find the details of the Nobel Prize winner 'Johannes Georg Bednorz'. Return year, subject, winner, country, and category.  

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

23. From the following table, write a SQL query to find Nobel Prize winners for the subject that does not begin with the letter 'P'. Return year, subject, winner, country, and category. Order the result by year, descending and winner in ascending.  

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

Click me to see the solution with result

24. From the following table, write a SQL query to find the details of 1970 Nobel Prize winners. Order the results by subject, ascending except for 'Chemistry' and ‘Economics’ which will come at the end of the result set. Return year, subject, winner, country, and category.  

Sample table: nobel_win

YEAR SUBJECT                   WINNER                                        COUNTRY                CATEGORY
---- ------------------------- --------------------------------------------- ------------------------- ------------
1970 Physics                   Hannes Alfven                                 Sweden                 Scientist
1970 Physics                   Louis Neel                                    France                 Scientist
1970 Chemistry                 Luis Federico Leloir                          France                 Scientist
1970 Physiology                Ulf von Euler                                 Sweden                 Scientist
1970 Physiology                Bernard Katz                                  Germany                Scientist
1970 Literature                Aleksandr Solzhenitsyn                        Russia                 Linguist
1970 Economics                 Paul Samuelson                                USA                    Economist
1970 Physiology                Julius Axelrod                                USA                    Scientist
1971 Physics                   Dennis Gabor                                  Hungary                Scientist
1971 Chemistry                 Gerhard Herzberg                              Germany                Scientist
1971 Peace                     Willy Brandt                                  Germany                Chancellor
1971 Literature                Pablo Neruda                                  Chile                  Linguist
1971 Economics                 Simon Kuznets                                 Russia                 Economist
1978 Peace                     Anwar al-Sadat                                Egypt                  President
1978 Peace                     Menachem Begin                                Israel                 Prime Minister
1987 Chemistry                 Donald J. Cram                                USA                    Scientist
1987 Chemistry                 Jean-Marie Lehn                               France                 Scientist
1987 Physiology                Susumu Tonegawa                               Japan                  Scientist
1994 Economics                 Reinhard Selten                               Germany                Economist
1994 Peace                     Yitzhak Rabin                                 Israel                 Prime Minister
1987 Physics                   Johannes Georg Bednorz                        Germany                Scientist
1987 Literature                Joseph Brodsky                                Russia                 Linguist
1987 Economics                 Robert Solow                                  USA                    Economist
1994 Literature                Kenzaburo Oe                                  Japan                  Linguist

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25. From the following table, write a SQL query to select a range of products whose price is in the range Rs.200 to Rs.600. Begin and end values are included. Return pro_id, pro_name, pro_price, and pro_com.  

Sample table: item_mast

 PRO_ID PRO_NAME                       PRO_PRICE    PRO_COM
------- ------------------------- -------------- ----------
    101 Mother Board                    3200.00         15
    102 Key Board                        450.00         16
    103 ZIP drive                        250.00         14
    104 Speaker                          550.00         16
    105 Monitor                         5000.00         11
    106 DVD drive                        900.00         12
    107 CD drive                         800.00         12
    108 Printer                         2600.00         13
    109 Refill cartridge                 350.00         13
    110 Mouse                            250.00         12

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26. From the following table, write a SQL query to calculate the average price for a manufacturer code of 16. Return avg.  

Sample table: item_mast

 PRO_ID PRO_NAME                       PRO_PRICE    PRO_COM
------- ------------------------- -------------- ----------
    101 Mother Board                    3200.00         15
    102 Key Board                        450.00         16
    103 ZIP drive                        250.00         14
    104 Speaker                          550.00         16
    105 Monitor                         5000.00         11
    106 DVD drive                        900.00         12
    107 CD drive                         800.00         12
    108 Printer                         2600.00         13
    109 Refill cartridge                 350.00         13
    110 Mouse                            250.00         12

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27. From the following table, write a SQL query to display the pro_name as 'Item Name' and pro_priceas 'Price in Rs.'  

Sample table: item_mast

 PRO_ID PRO_NAME                       PRO_PRICE    PRO_COM
------- ------------------------- -------------- ----------
    101 Mother Board                    3200.00         15
    102 Key Board                        450.00         16
    103 ZIP drive                        250.00         14
    104 Speaker                          550.00         16
    105 Monitor                         5000.00         11
    106 DVD drive                        900.00         12
    107 CD drive                         800.00         12
    108 Printer                         2600.00         13
    109 Refill cartridge                 350.00         13
    110 Mouse                            250.00         12

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28. From the following table, write a SQL query to find the items whose prices are higher than or equal to $250. Order the result by product price in descending, then product name in ascending. Return pro_name and pro_price.  

Sample table: item_mast

 PRO_ID PRO_NAME                       PRO_PRICE    PRO_COM
------- ------------------------- -------------- ----------
    101 Mother Board                    3200.00         15
    102 Key Board                        450.00         16
    103 ZIP drive                        250.00         14
    104 Speaker                          550.00         16
    105 Monitor                         5000.00         11
    106 DVD drive                        900.00         12
    107 CD drive                         800.00         12
    108 Printer                         2600.00         13
    109 Refill cartridge                 350.00         13
    110 Mouse                            250.00         12

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29. From the following table, write a SQL query to calculate average price of the items for each company. Return average price and company code. 

Sample table: item_mast

 PRO_ID PRO_NAME                       PRO_PRICE    PRO_COM
------- ------------------------- -------------- ----------
    101 Mother Board                    3200.00         15
    102 Key Board                        450.00         16
    103 ZIP drive                        250.00         14
    104 Speaker                          550.00         16
    105 Monitor                         5000.00         11
    106 DVD drive                        900.00         12
    107 CD drive                         800.00         12
    108 Printer                         2600.00         13
    109 Refill cartridge                 350.00         13
    110 Mouse                            250.00         12

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30. From the following table, write a SQL query to find the cheapest item(s). Return pro_name and, pro_price.  

Sample table: item_mast

 PRO_ID PRO_NAME                       PRO_PRICE    PRO_COM
------- ------------------------- -------------- ----------
    101 Mother Board                    3200.00         15
    102 Key Board                        450.00         16
    103 ZIP drive                        250.00         14
    104 Speaker                          550.00         16
    105 Monitor                         5000.00         11
    106 DVD drive                        900.00         12
    107 CD drive                         800.00         12
    108 Printer                         2600.00         13
    109 Refill cartridge                 350.00         13
    110 Mouse                            250.00         12

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31. From the following table, write a SQL query to find the unique last name of all employees. Return emp_lname.  

Sample table: emp_details

 EMP_IDNO EMP_FNAME       EMP_LNAME         EMP_DEPT
--------- --------------- --------------- ----------
   127323 Michale         Robbin                  57
   526689 Carlos          Snares                  63
   843795 Enric           Dosio                   57
   328717 Jhon            Snares                  63
   444527 Joseph          Dosni                   47
   659831 Zanifer         Emily                   47
   847674 Kuleswar        Sitaraman               57
   748681 Henrey          Gabriel                 47
   555935 Alex            Manuel                  57
   539569 George          Mardy                   27
   733843 Mario           Saule                   63
   631548 Alan            Snappy                  27
   839139 Maria           Foster                  57

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32. From the following table, write a SQL query to find the details of employees whose last name is 'Snares'. Return emp_idno, emp_fname, emp_lname, and emp_dept.  

Sample table: emp_details

 EMP_IDNO EMP_FNAME       EMP_LNAME         EMP_DEPT
--------- --------------- --------------- ----------
   127323 Michale         Robbin                  57
   526689 Carlos          Snares                  63
   843795 Enric           Dosio                   57
   328717 Jhon            Snares                  63
   444527 Joseph          Dosni                   47
   659831 Zanifer         Emily                   47
   847674 Kuleswar        Sitaraman               57
   748681 Henrey          Gabriel                 47
   555935 Alex            Manuel                  57
   539569 George          Mardy                   27
   733843 Mario           Saule                   63
   631548 Alan            Snappy                  27
   839139 Maria           Foster                  57

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33. From the following table, write a SQL query to retrieve the details of the employees who work in the department 57. Return emp_idno, emp_fname, emp_lname and emp_dept..  

Sample table: emp_details

 EMP_IDNO EMP_FNAME       EMP_LNAME         EMP_DEPT
--------- --------------- --------------- ----------
   127323 Michale         Robbin                  57
   526689 Carlos          Snares                  63
   843795 Enric           Dosio                   57
   328717 Jhon            Snares                  63
   444527 Joseph          Dosni                   47
   659831 Zanifer         Emily                   47
   847674 Kuleswar        Sitaraman               57
   748681 Henrey          Gabriel                 47
   555935 Alex            Manuel                  57
   539569 George          Mardy                   27
   733843 Mario           Saule                   63
   631548 Alan            Snappy                  27
   839139 Maria           Foster                  57

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Practice Online


More to Come !

Query visualizations are generated using Postgres Explain Visualizer (pev).

Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.



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