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Forming a query to pull identical data values from different rows
Posted by: tyler ahrens ()
Date: November 11, 2010 12:40AM

i'm obviously a newbie, and would appreciate any help i can get. i'm doing this for schoolwork, and not being lazy, just legitimately stumped.

i'll just quote the question i'm trying to answer, the complete database at the bottom of this post, and see if i can get some help in fixing this:

"list the book codes for each pair of books that have the same price. (for example, one such pair would be book 0200 and book 7559, because the price of both books is $8.00.) the first book code listed should be the major sort key, and the second book code should be the minor sort key."

how would i create this statement?

thanks.




SHOW TABLES RESULTS

mysql> SHOW TABLES;
+-----------------+
| Tables_in_henry |
+-----------------+
| author |
| book |
| branch |
| inventory |
| publisher |
| wrote |
+-----------------+
6 rows in set (0.00 sec)

TABLE DATA

mysql> SELECT *
-> FROM AUTHOR;
+------------+--------------+--------------+
| AUTHOR_NUM | AUTHOR_LAST | AUTHOR_FIRST |
+------------+--------------+--------------+
| 1 | Morrison | Toni |
| 2 | Solotaroff | Paul |
| 3 | Vintage | Vernor |
| 4 | Francis | Dick |
| 5 | Straub | Peter |
| 6 | King | Stephen |
| 7 | Pratt | Philip |
| 8 | Chase | Truddi |
| 9 | Collins | Bradley |
| 10 | Heller | Joseph |
| 11 | Wills | Gary |
| 12 | Hofstadter | Douglas R. |
| 13 | Lee | Harper |
| 14 | Ambrose | Stephen E. |
| 15 | Rowling | J.K. |
| 16 | Salinger | J.D. |
| 17 | Heaney | Seamus |
| 18 | Camus | Albert |
| 19 | Collins, Jr. | Bradley |
| 20 | Steinbeck | John |
| 21 | Castelman | Riva |
| 22 | Owen | Barbara |
| 23 | O'Rourke | Randy |
| 24 | Kidder | Tracy |
| 25 | Schleining | Lon |
+------------+--------------+--------------+
25 rows in set (0.02 sec)

mysql> SELECT *
-> FROM BOOK;
+-----------+------------------------------------------+----------------+------+-------+-----------+
| BOOK_CODE | TITLE | PUBLISHER_CODE | TYPE | PRICE | PAPERBACK |
+-----------+------------------------------------------+----------------+------+-------+-----------+
| 0180 | A Deepness in the Sky | TB | SFI | 7.19 | Y |
| 0189 | Magic Terror | FA | HOR | 7.99 | Y |
| 0200 | The Stranger | VB | FIC | 8.00 | Y |
| 0280 | Rumpole for the Defence | PE | MYS | 7.19 | Y |
| 0378 | Venice | SS | ART | 24.50 | N |
| 0389 | Concepts of Database Management | CT | CMP | 43.99 | Y |
| 079X | Second Wind | PU | MYS | 24.95 | N |
| 0808 | The Edge | JP | MYS | 6.99 | Y |
| 1351 | Dreamcatcher: A Novel | SC | HOR | 19.60 | N |
| 1382 | Treasure Chests | TA | ART | 24.46 | N |
| 138X | Beloved | PL | FIC | 12.95 | Y |
| 1456 | Truman | SS | HIS | 29.90 | Y |
| 2226 | Harry Potter and the Prisoner of Azkaban | ST | SFI | 13.96 | N |
| 2281 | Van Gogh and Gauguin | WP | ART | 21.00 | N |
| 2766 | Of Mice and Men | PE | FIC | 6.95 | Y |
| 2908 | Electric Light | FS | POE | 14.00 | N |
| 3350 | Group: Six People in Search of a Life | BP | PSY | 10.40 | Y |
| 3743 | Nine Stories | LB | FIC | 5.99 | Y |
| 3906 | The Soul of a New Machine | BY | SCI | 11.16 | Y |
| 5163 | Travels with Charley | PE | TRA | 7.95 | Y |
| 5790 | Catch-22 | SC | FIC | 12.00 | Y |
| 6128 | Jazz | PL | FIC | 12.95 | Y |
| 6328 | Band of Brothers | TO | HIS | 9.60 | Y |
| 669X | A Guide to SQL | CT | CMP | 37.95 | Y |
| 6908 | Franny and Zooey | LB | FIC | 5.99 | Y |
| 7405 | East of Eden | PE | FIC | 12.95 | Y |
| 7443 | Harry Potter and the Goblet of Fire | ST | SFI | 18.16 | N |
| 7559 | The Fall | VB | FIC | 8.00 | Y |
| 8092 | Godel, Escher, Bach | BA | PHI | 14.00 | Y |
| 8720 | When Rabbit Howls | JP | PSY | 6.29 | Y |
| 9611 | Black House | RH | HOR | 18.81 | N |
| 9627 | Song of Solomon | PL | FIC | 14.00 | Y |
| 9701 | The Grapes of Wrath | PE | FIC | 13.00 | Y |
| 9882 | Slay Ride | JP | MYS | 6.99 | Y |
| 9883 | The Catcher in the Rye | LB | FIC | 5.99 | Y |
| 9931 | To Kill a Mockingbird | HC | FIC | 18.00 | N |
+-----------+------------------------------------------+----------------+------+-------+-----------+
36 rows in set (0.00 sec)

mysql> SELECT *
-> FROM BRANCH;
+------------+-------------------+-----------------+---------------+
| BRANCH_NUM | BRANCH_NAME | BRANCH_LOCATION | NUM_EMPLOYEES |
+------------+-------------------+-----------------+---------------+
| 1 | Henry Downtown | 16 Riverview | 10 |
| 2 | Henry On The Hill | 1289 Bedford | 6 |
| 3 | Henry Brentwood | Brentwood Mall | 15 |
| 4 | Henry Eastshore | Eastshore Mall | 9 |
+------------+-------------------+-----------------+---------------+
4 rows in set (0.01 sec)

mysql> SELECT *
-> FROM INVENTORY;
+-----------+------------+---------+
| BOOK_CODE | BRANCH_NUM | ON_HAND |
+-----------+------------+---------+
| 0180 | 1 | 2 |
| 0189 | 2 | 2 |
| 0200 | 1 | 1 |
| 0200 | 2 | 3 |
| 0378 | 3 | 2 |
| 079X | 2 | 1 |
| 079X | 3 | 2 |
| 079X | 4 | 3 |
| 0808 | 2 | 1 |
| 1351 | 2 | 4 |
| 1351 | 3 | 2 |
| 1382 | 2 | 1 |
| 138X | 2 | 3 |
| 2226 | 1 | 3 |
| 2226 | 3 | 2 |
| 2226 | 4 | 1 |
| 2281 | 4 | 3 |
| 2766 | 3 | 2 |
| 2908 | 1 | 3 |
| 2908 | 4 | 1 |
| 3350 | 1 | 2 |
| 3743 | 2 | 1 |
| 3906 | 2 | 1 |
| 3906 | 3 | 2 |
| 5163 | 1 | 1 |
| 5790 | 4 | 2 |
| 6128 | 2 | 4 |
| 6128 | 3 | 3 |
| 6328 | 2 | 2 |
| 669X | 1 | 1 |
| 6908 | 2 | 2 |
| 7405 | 3 | 2 |
| 7443 | 4 | 1 |
| 7559 | 2 | 2 |
| 8092 | 3 | 1 |
| 8720 | 1 | 3 |
| 9611 | 1 | 2 |
| 9627 | 3 | 5 |
| 9627 | 4 | 2 |
| 9701 | 1 | 2 |
| 9701 | 2 | 1 |
| 9701 | 3 | 3 |
| 9701 | 4 | 2 |
| 9882 | 3 | 3 |
| 9883 | 2 | 3 |
| 9883 | 4 | 2 |
| 9931 | 1 | 2 |
+-----------+------------+---------+
47 rows in set (0.02 sec)

mysql> SELECT *
-> FROM PUBLISHER;
+----------------+--------------------------+--------------+
| PUBLISHER_CODE | PUBLISHER_NAME | CITY |
+----------------+--------------------------+--------------+
| AH | Arkham House | Sauk City WI |
| AP | Arcade Publishing | New York |
| BA | Basic Books | Boulder CO |
| BP | Berkley Publishing | Boston |
| BY | Back Bay Books | New York |
| CT | Course Technology | Boston |
| FA | Fawcett Books | New York |
| FS | Farrar Straus and Giroux | New York |
| HC | HarperCollins Publishers | New York |
| JP | Jove Publications | New York |
| JT | Jeremy P. Tarcher | Los Angeles |
| LB | Lb Books | New York |
| MP | McPherson and Co. | Kingston |
| PE | Penguin USA | New York |
| PL | Plume | New York |
| PU | Putnam Publishing Group | New York |
| RH | Random House | New York |
| SB | Schoken Books | New York |
| SC | Scribner | New York |
| SS | Simon and Schuster | New York |
| ST | Scholastic Trade | New York |
| TA | Taunton Press | Newtown CT |
| TB | Tor Books | New York |
| TH | Thames and Hudson | New York |
| TO | Touchstone Books | Westport CT |
| VB | Vintage Books | New York |
| WN | W.W. Norton | New York |
| WP | Westview Press | Boulder CO |
+----------------+--------------------------+--------------+
28 rows in set (0.00 sec)

mysql> SELECT *
-> FROM WROTE;
+-----------+------------+----------+
| BOOK_CODE | AUTHOR_NUM | SEQUENCE |
+-----------+------------+----------+
| 0180 | 3 | 1 |
| 0189 | 5 | 1 |
| 0200 | 18 | 1 |
| 0378 | 11 | 1 |
| 079X | 4 | 1 |
| 0808 | 4 | 1 |
| 1351 | 6 | 1 |
| 1382 | 23 | 2 |
| 1382 | 25 | 1 |
| 138X | 1 | 1 |
| 2226 | 15 | 1 |
| 2281 | 9 | 2 |
| 2281 | 19 | 1 |
| 2766 | 20 | 1 |
| 2908 | 17 | 1 |
| 3350 | 2 | 1 |
| 3743 | 16 | 1 |
| 3906 | 24 | 1 |
| 5163 | 20 | 1 |
| 5790 | 10 | 1 |
| 6128 | 1 | 1 |
| 6328 | 14 | 1 |
| 669X | 7 | 1 |
| 6908 | 16 | 1 |
| 7405 | 20 | 1 |
| 7443 | 15 | 1 |
| 7559 | 18 | 1 |
| 8092 | 12 | 1 |
| 8720 | 8 | 1 |
| 9611 | 5 | 2 |
| 9611 | 6 | 1 |
| 9627 | 1 | 1 |
| 9701 | 20 | 1 |
| 9882 | 4 | 1 |
| 9883 | 16 | 1 |
| 9931 | 13 | 1 |
+-----------+------------+----------+
36 rows in set (0.02 sec)

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Subject Written By Posted
Forming a query to pull identical data values from different rows tyler ahrens 11/11/2010 12:40AM
Re: Forming a query to pull identical data values from different rows laptop alias 11/11/2010 07:56AM


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