Hi Subramanian, I see a NA as my A2-bigq grade. Does "NA" means a 0 too? Or, it just means that the grade has not been uploaded yet. (group members are Akshat...
Hi Today I downloaded my code of BigQ A2 from course toll It is working fine. There should not be any problem in untarring the file. Could there be other...
Hi All A few queries on A3: 1. Function.tar has a new version of Lexer.l /Parser.y. ?? 2. Compiling Function.cc throws an error: Record.h:31: error: 'char *'...
Hi, I have some doubts reagrading the implementation of Join. 1. In order to concatenate the 2 joined records and output the result record, we use Merge()...
The new parser and lexer are specifically for compiling and testing functions. You should put the new parser and lexer together with the old one in a...
Hi all-- Please remember: if you have an A2 that works responably well, please make sure to send it to me for posting on the web page. Then other people can...
Hi all-- This is a reminder that A3 is due next Tuesday evening (not tomorrow, which was the original deadline). I won't be in class tomorrow, but Prof Dobra...
Hi Chris, I tried to merge Lexer.l and Parser.y, but there are 2 declarations of Op in the Parser files. %type <whichOne> Op %type <myComparison> Op Are we...
95
Joyesh Mishra
jmishra@...
Mar 21, 2008 6:23 pm
Hi Chris, I too had a question in this regard. Function parser and the CNF parser are used to initialize the following in the end: struct AndList *final; ...
Yes, just define 2 kinds of ops: something like arithOps and logicalOps. --Chris -- ____________________________________________________________ Christopher...
Sure, it's acceptable. Remember, this is just for testing. If you'd like, you can define two new tokens; maybe assoicated with the strings ARITHMATIC and...
I just realized what happened. A few days ago, Umang sent a question regarding the block-nested loops join to the ildb mailing list accidentally (ildb is the...
I just checked this. Apparently Solaris is using an older version of lex which doesn't recognize the new Lexer.l included in the driver. It seems to work...
Hi Subi, Does our test driver test GroupBy and DupliateRemoval? I am able to build it without linking GroupBy.o and DuplicateRemoval.o. I couldn't find any...
Also I am not able to compile a2-2test.out, a2test.out and a1test.out because their corresponding cc files are not present. Anyway I think they can be copied...
An updated version of the driver is now available on the class website. It includes a few additional queries. NOTE: The driver won't compile on the solaris...
The driver has a minor bug (it was assuming the join operator eliminates the redundant column if given a equi-join predicate). That was not the behavior...
Hi Subi, Could you please tell us how many records to expect as the output of q4? It will help us in confirming the results. Thank you Soumyajit...
112
Joyesh Mishra
jmishra@...
Mar 27, 2008 2:37 am
Hi Subi, Is the TPCH data available in any of the database server (in CISE Oracle etc) for students to query and find result by connecting to it? That would ...
