Mailing List
Home
Forum Home
MySQL General - General MySQL discussion
MySQL++ - Programming with the C++ API to MySQL
MaxDB - Everything about MaxDB, formerly known as SAP DB
ODBC - ODBC with the MySQL Connector/ODBC driver
MySQL on Win32 - Runing MySQL on Windows 9x/Me/NT/2000/XP
Java Help - Mostly related to the MySQL Connector/J driver
Perl - Perl support for MySQL with DBI and DBD::mysql
GUI - MySQL GUI Tools
Announcement
Subjects
• mysql openssl Question
• mysql:it 's a db not a dbms how it 's possible?!
• Does the binary log enabling affect the MySQL performances?
• Strange behavior, Table Level Permission
• FULLTEXT query format question
• Preventing Duplicate Entries
• Comparing and writing out BLOBS
• Executing MySQL Commands From Within C Program
• Can 't access mysql after kernel upgrade
• Mysql 4 0 Oracle Stored Procedure Trigger Conversion
• Downgrade Mysql from 4 to 3 23
• MySQL Cluster Software
• mysql test 4 1 fails with the gis test
• ERROR 2002: Can 't connect to local MySQL server through socket
• Getting Identity after INSERT
• Update one field with more fields from another table
• ERROR 1045: Access denied for user: 'root@localhost ' (Using
password: NO)
• mysql have same function mthod as Oracle decode()
 
Running Totals with MySQL

Running Totals with MySQL

2006-11-21       - By Kerry Frater

 Back
Reply:     1     2     3     4  

I need to keep a running total (not an aggregate) based on data in two
columns e.g.
a   b   calculated_col
100    -10   90
50     10    150
-10    -20   120

the rows are selected on certain WHERE criteria and so the running total is
not fixed data. The running total is for display on the screen.
Doing this work in the language interfacing with MySQL is causing some odd
side effects so I was hoping to do the work on the MySQL side instead.

Kerry


--
MySQL++ Mailing List
For list archives: http://lists.mysql.com/plusplus
To unsubscribe:    http://lists.mysql.com/plusplus?unsub=mysql@(protected)