Sponsored Content
Top Forums Shell Programming and Scripting Select record with MAX value in MySQL Post 302433655 by radoulov on Wednesday 30th of June 2010 07:28:30 AM
Old 06-30-2010
I guess I don't understand ...
I mean, at this stage:

Quote:
the next process add the record to the table version and delete it
change it to:

Quote:
the next process adds the record to the table version, updates the modification time in the files table and then deletes it
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Select Record based on First Column

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

mysql select query optimization..

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

mysql select query optimization..

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

Select max value based on filename

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

Max value Record from a File

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

Getting Rows from a MySQL Table with max values?

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

Select record having different value in second column

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

MySQL select user with the same IP address

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

Script to record max memory usage of program

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
perror(1)							  MySQL database							 perror(1)

NAME
perror - describes a system or MySQL error code. SYNOPSIS
perror [OPTIONS] [ERRORCODE [ERRORCODE...]] DESCRIPTION
Can be used to display a description for a system error code, or an MyISAM/ISAM table handler error code. The error messages are mostly system dependent. OPTIONS
-?|--help Displays this help and exits. -I|--info Synonym for the above. -s|--silent Only print the error message -v|--verbose Print error code and message (default). -V|--version Displays version information and exits. EXAMPLE
shell> perror 64 79 Error code 64: Machine is not on the network Error code 79: Can not access a needed shared library SEE ALSO
isamchk(1), isamlog(1), mysql(1), mysqlaccess(1), mysqladmin(1), mysqld(1), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysql_fix_privi- lege_tables(1), mysqlshow(1), mysql_zap(1), replace(1) For more information please refer to the MySQL reference manual, which may already be installed locally and which is also available online at http://www.mysql.com/doc/en/ BUGS
Please refer to http://bugs.mysql.com/ to report bugs. AUTHOR
Ver 1.0, distribution 4.0.24 Michael (Monty) Widenius (monty@mysql.com), MySQL AB (http://www.mysql.com/). This software comes with no warranty. Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mercurmedia Data Model Architect / system developer (http://www.mercur- media.com) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+------------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+------------------------------------+ |Availability | SUNWmysqlr, SUNWmysqlu, SUNWmysqlt | +--------------------+------------------------------------+ |Interface Stability | External | +--------------------+------------------------------------+ NOTES
Source for mysql is available on http://opensolaris.org. MySQL 4.0 19 December 2000 perror(1)
All times are GMT -4. The time now is 03:07 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy