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by: Kiel |
last post by:
=====
My error is:
error C2512: no appropriate default constructor available
I'm trying to use the default args for class B when it is an aggregate
of class A. I could solve this problem with a point to B and
initialize it in the C'tor of A, but logically it makes sense as an
aggregate.
=====
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by: Greg Stark |
last post by:
I find I often want to be able to do joins against views where the view are
aggregates on a column that has an index. Ie, something like
SELECT a.*, v.n
FROM a
JOIN (select a_id,count(*) as n group by a_id) as v USING (a_id)
where there's an index on b.a_id. assume there are other tables being joined
so I can't just move the aggregate to the outermost layer.
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by: Toby Dann |
last post by:
I have an aggregate query as recordsource for a form to show a list of
invoices, including the totals (calculated by the aggregate query -
I'm trying to duplicate as little info as possible here).
What I want to achieve is a recordcount (of the number of records
returned by the aggregate query) and Sum of the Invoice totals, but
Access does not seem to like calculating either of these on an
aggregate query.
Any ideas? Am I going about...
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by: neb |
last post by:
Dear member of the forum,
Ms access has built-in aggregate function like:
-Sum, Max, First, Avg, ...
Is it possible to build user-defined aggregate?
(if you have any clue, do not hesitate to post)
*I'm running a total query, of the form
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by: MrNobody |
last post by:
I've read that the expression property for DataColumns is used to "Sets or
retrieves the expresssion used to filter rows, calculate the values in a
column, or create an aggregate column.".
I have seen examples on how to filter a column, but how would I filter out
an entire row depending on the value of a column?
For example, if I wanted to filter out every row in a multi-column table
where the "Is Fubar" column equals "true", how would...
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by: Najib Abi Fadel |
last post by:
Hi
i have an ordered table of dates let's say:
1/1/2004
8/1/2004
15/1/2004
29/1/2004
5/2/2004
12/2/2004
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by: Raghu |
last post by:
Hello all,
Can somebody help me hopw to resolve teh probelm of aggregate initialisation
in c++.
Her eis the piece of code.
#include<stdio.h>
class MyTest
{
public:
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by: Ian825 |
last post by:
I need help writing a function for a program that is based upon the various operations of a matrix and I keep getting a "non-aggregate type" error. My guess is that I need to dereference my pointers, but I'm not sure. Please help.
The code:
void equate(matrix *A, matrix *B)
{
int i, j;
assert(A.row_dim == B.col_dim && A.col_dim == B.col_dim);
for(i=0; i < A.row_dim; i++)
for(j=0; j < A.col_dim; j++)
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by: shapper |
last post by:
Hello,
I have the following Linq query:
var q = (from p in database.Posts
join pt in database.PostsTags on p.PostID equals
pt.PostID
join t in database.Tags on pt.TagID equals t.TagID
group t by p into pt
select new PostPaper {
|
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, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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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 tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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