Solved

check the product change in mysql

Posted on 2006-11-15
2
147 Views
Last Modified: 2008-02-20

00001  0   2006-11-15 20:54:05
00002  2   2006-11-15 20:54:05
00012  4   2006-11-15 20:54:05
00001  4   2006-12-15 20:54:05
00002  3   2006-12-15 20:54:05
00003  2   2006-12-15 20:54:05

three colum above name code,onhand,time

how can I write code to caculate onhand  change  (if some code nohave onhand give it equal to 0)
00003  2
00002  1
00001  4
00012  -4   (if some code nohave onhand give it equal to 0)
0
Comment
Question by:teera
2 Comments
 
LVL 19

Accepted Solution

by:
VoteyDisciple earned 450 total points
ID: 17949219
I'm not even sure what you're asking.  It seems like you want the difference between 'onhand' found on two different dates, yet the example you gave there doesn't seem to reflect that?

If that is what you want, which two dates?  How many dates are listed for each item?  Do you want the difference between each pair, or just the difference from the earliest record to the most recent?
0
 

Author Comment

by:teera
ID: 17951930
Hi  VoteyDisciple
you are right that is the think I want can I use sql command only or I need to use php
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this.Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it is …
These days socially coordinated efforts have turned into a critical requirement for enterprises.
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now