06-29-2010
Quote:
In the real world, I have a big table containing a huge number of uploaded files.[...]
Well,
first of all, I think, you should rethink the
relational design.
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have a file with multiple records...and I have to select records based on first column....here is the sample file...
I01,abc,125,1a2,LBVI02
I01,abc,126,2b5,LBVI02
I02,20070530,254,abc,LLBI01
I02,20070820,111,bvd,NGBI01
I need all records with I01 in first field in one file and... (8 Replies)
Discussion started by: mgirinath
8 Replies
2. Shell Programming and Scripting
hi..
i need to optimize my select query ..
my situation is like this ..
i have 15 lac recors in my table..
the following query takes nine seconds to give the required output..
SELECT max(ah.AUC_AMT),
SUBSTRING_INDEX(GROUP_CONCAT(SUBSTRING_INDEX(ah.AUC_CUS_NAME,'@',1) order by AUC_AMT... (0 Replies)
Discussion started by: senkerth
0 Replies
3. UNIX for Advanced & Expert Users
hi..
i need to optimize my select query ..
my situation is like this ..
i have 15 lac recors in my table..
the following query takes nine seconds to give the required output..
SELECT max(ah.AUC_AMT),
SUBSTRING_INDEX(GROUP_CONCAT(SUBSTRING_INDEX(ah.AUC_CUS_NAME,'@',1) order by AUC_AMT... (1 Reply)
Discussion started by: senkerth
1 Replies
4. UNIX for Dummies Questions & Answers
Hi, I would just like to know how to get the file with the max filename on a directory and get rid of all the others. For example, in directory A:/ i have the ff files:
APPLE2001
APPLE2002
APPLE2003
GRAPE2004
what I want to get is the max in files whose filenames start with APPLE*,... (4 Replies)
Discussion started by: madden
4 Replies
5. Shell Programming and Scripting
I have a file with 3 columns
I want to get the record with the max salary. If there are more than 1 record having the highest salary, i want any one of them.
empid,ename,Sal
1,abc,100
2,def,200
3,xyz,300
4,pqr,100
5,mnq,300
Output
Any record with 300 as salary
Please use next... (1 Reply)
Discussion started by: traininfa
1 Replies
6. Programming
I feel stupid for asking this because it seems that MYSQL code isn't working the way that I think it should work.
Basically I wrote code like this:
select * from `Test_DC_Trailer` HAVING max(DR_RefKey);
Where the DR_RefKey is a unique numeric field that is auto iterated (like a primary key)... (7 Replies)
Discussion started by: Astrocloud
7 Replies
7. Shell Programming and Scripting
I want records which have more than one and different value in the second column on the below sample file.
Ex, I have the samle file below :-
XYZ 1
XYZ 3
abc 1
abc 1
qwe 2
qwe 1
qwe 3
I want to select XYZ and QWE line only. (6 Replies)
Discussion started by: Sanjeev Yadav
6 Replies
8. Programming
Dear community,
I woul like to make a query to output all the users having the same IP address.
The table is somethig like:
name logged_ip
==== =========
user1 127.0.0.1
user2 127.0.0.2
user3 127.0.0.3
user4 127.0.0.1
user5 127.0.0.2
user6 127.0.0.5I used this query... (4 Replies)
Discussion started by: Lord Spectre
4 Replies
9. Shell Programming and Scripting
Hello,
I am working on an application that uses allot of memory depending on the input. I am also working on more than one processing algorithm.
The program has a long processing time (hours) so it would be nice to be able to monitor the maximum memory footprint of the application during runs... (1 Reply)
Discussion started by: LMHmedchem
1 Replies
LEARN ABOUT CENTOS
perl::critic::policy::codelayout::requireascii
Perl::Critic::Policy::CodeLayout::RequireASCII(3) User Contributed Perl Documentation Perl::Critic::Policy::CodeLayout::RequireASCII(3)
NAME
Perl::Critic::Policy::CodeLayout::RequireASCII - Disallow high-bit characters.
AFFILIATION
This policy is part of Perl::Critic::More, a bleeding edge supplement to Perl::Critic.
DESCRIPTION
ASCII is a text encoding first introduced in 1963. It represents 128 characters in seven-bit bytes, reserving the eighth bit for error
detection. Perl supports a large number of encodings. However, if you really want the ultimate in backward compatibility, ASCII is it!
(We won't even talk about EBCDIC and the like...)
This policy is not recommended for everyone. Instead, most of you should probably strive for one of the Unicode encodings for maximum
forward compatibility.
SEE ALSO
<http://en.wikipedia.org/wiki/Ascii>
<http://en.wikipedia.org/wiki/EBCDIC>
<http://en.wikipedia.org/wiki/Unicode>
AUTHOR
Chris Dolan <cdolan@cpan.org>
COPYRIGHT
Copyright (c) 2006-2008 Chris Dolan
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.16.3 2014-06-10 Perl::Critic::Policy::CodeLayout::RequireASCII(3)