Difference between revisions of "CSC220 Homework 5 2010"
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* Get a copy of the following php program which you will store in your regular main directory (no need to store it in your public_html directory): [[CSC220 testSql.php | testSql.php]]. | * Get a copy of the following php program which you will store in your regular main directory (no need to store it in your public_html directory): [[CSC220 testSql.php | testSql.php]]. | ||
* Locate the two lines in the php code that requires editing, and enter your own account and password (the password is the same one as your 220a-xx account on beowulf). | * Locate the two lines in the php code that requires editing, and enter your own account and password (the password is the same one as your 220a-xx account on beowulf). | ||
+ | * create a new text file, in the same directory where you put '''testSql.php''' and call it '''test.sql'''. Store the following information in it: | ||
+ | |||
+ | SELECT * FROM `items`; | ||
+ | |||
+ | SELECT `itemName` FROM `items`; | ||
+ | |||
+ | SELECT `itemName` FROM `items`WHERE `itemId`=2; | ||
+ | |||
+ | SELECT * FROM `users` ORDER BY `userName` ASC; | ||
+ | |||
+ | SELECT * FROM `orders` WHERE `userId`=1; | ||
+ | |||
+ | SELECT `itemName` FROM `items` WHERE `itemId` IN ( 1, 2, 3 ); | ||
+ | |||
+ | SELECT `itemName` FROM `items` WHERE `itemId` IN ( SELECT `itemId` FROM `orders` WHERE `userId`=1 ); | ||
+ | |||
+ | SELECT `itemName` FROM `items` WHERE `itemId` IN ( | ||
+ | SELECT `itemId` FROM `orders` WHERE `userId` IN ( | ||
+ | SELECT `userId` FROM `users` WHERE `userName`='Marie') ); |
Revision as of 16:33, 13 October 2010
--D. Thiebaut 20:04, 13 October 2010 (UTC)
This assignment is due on 10/20/10, at 11:59 p.m. + 1 minute. You can work on it in pairs.
Setup
- Your assignment is to write a collection of mysql queries that will be the answers to different questions.
- In order to test these queries easily, you will need to include all of them in a text file (test.sql) that will become a single SQL program. This is the file you will submit for the assignment.
- you will generate the different queries using phpmyadmin running on either hadoop101 or hadoop110.
- You can test the correctness of your test.sql program by testing it with the same php program I will use to grade the assignment. More about this at the end of this page.
Dry Run
- Login to your 220a-xx account on one of the Hadoop machines.
- Get a copy of the following php program which you will store in your regular main directory (no need to store it in your public_html directory): testSql.php.
- Locate the two lines in the php code that requires editing, and enter your own account and password (the password is the same one as your 220a-xx account on beowulf).
- create a new text file, in the same directory where you put testSql.php and call it test.sql. Store the following information in it:
SELECT * FROM `items`; SELECT `itemName` FROM `items`; SELECT `itemName` FROM `items`WHERE `itemId`=2; SELECT * FROM `users` ORDER BY `userName` ASC; SELECT * FROM `orders` WHERE `userId`=1; SELECT `itemName` FROM `items` WHERE `itemId` IN ( 1, 2, 3 ); SELECT `itemName` FROM `items` WHERE `itemId` IN ( SELECT `itemId` FROM `orders` WHERE `userId`=1 ); SELECT `itemName` FROM `items` WHERE `itemId` IN ( SELECT `itemId` FROM `orders` WHERE `userId` IN ( SELECT `userId` FROM `users` WHERE `userName`='Marie') );