473,395 Members | 1,457 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,395 software developers and data experts.

why this query is making rubbish result?

the bill,paid and exempted are floating point variable.
but when i run the query, the column of due outputs just blank while the sum(bill.exempted) returns 0. which is rubbish.
Why it happens, why the due column is 0 whenever the sum(bill.exempted) is zero?

Can anyone say it.

The query is placed below:

Expand|Select|Wrap|Line Numbers
  1. select cc, sum(bill)as b,sum(paid)as p, sum(exempted) as ex, sum(bill.bill-bill.paid)-sum(bill.exempted)  AS due from bill group by cc
Sep 4 '08 #1
1 1296
r035198x
13,262 8TB
Add a where clause to select only where those columns are not null.
Sep 5 '08 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

13
by: dogu | last post by:
Noob alert. Code is below. File is saved as a .php. What I'm trying to do: User uses 'select' box drop down list to pick a value. Value ($site) is derived from a db query. This works fine....
4
by: shumaker | last post by:
I'm wondering how/why this query works. Trying to get my head wrapped around SQL. Basically the Query deletes from the Import table all records that are already in FooStrings so that when I do an...
34
by: Asfand Yar Qazi | last post by:
Hi, I'm creating a library where several classes are intertwined rather tightly. I'm thinking of making them all use pimpls, so that these circular dependancies can be avoided easily, and I'm...
351
by: CBFalconer | last post by:
We often find hidden, and totally unnecessary, assumptions being made in code. The following leans heavily on one particular example, which happens to be in C. However similar things can (and...
24
by: clare at snyder.on.ca | last post by:
I have a SQL query I need to design to select name and email addresses for policies that are due and not renewed in a given time period. The problem is, the database keeps the information for every...
8
by: Jerim79 | last post by:
I am working on a script that will query a database for a FNAME/LNAME combo. If it finds the combo, I need it to do one set of instructions. If it doesn't find it, I need it to do something else....
16
by: The Frog | last post by:
Hi Everyone, I have a small problem that doesnt seem to make any sense. I am using Access 97, and have a query that selects data from a text field, converts it to type Lng. This seems to work...
10
by: Lloyd Harold | last post by:
I'm very new to PHP and attempting to put together a simple script for retrieving MySQL data of personal records. The MySQL table I'm using consists of: 0: id 1: name 2: location (an integer...
20
by: Guillaume Dargaud | last post by:
I must be tired tonight: $query="SELECT * FROM ImageList WHERE Name='$value'"; $result=mysql_query($query, $DB) or die(mysql_error()); if ($result) { $InContext=mysql_fetch_assoc($result);...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.