by: Agoston Bejo |
last post by:
I want to enforce such a constraint on a column that would ensure that the
values be all unique, but this wouldn't apply to NULL values. (I.e. there
may be more than one NULL value in the column.)...
|
by: iStrain |
last post by:
Hiya. I'm _sure_ this is an FAQ, but Googling hasn't produced the
answer in a way I can make sense out of. I know I should get this, but
so far no way...
I'm creating tables and doing queries in...
|
by: Mike MacSween |
last post by:
This as the row source for a combo:
SELECT qryRole.RoleID, qryRole.Role
FROM qryRole
WHERE (((qryRole.RoleID) Not In (SELECT RoleID FROM qryRoleEvent INNER JOIN
qryEvent ON qryRoleEvent.EventID...
|
by: sathyashrayan |
last post by:
The standard confirms that the following initialization of a struct
struct node
{
---
---
}
struct node var = {NULL};
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by: junky_fellow |
last post by:
Can 0x0 be a valid virtual address in the address space
of an application ?
If it is valid, then the location pointed by a NULL pointer
is also valid and application should not receive "SIGSEGV"...
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by: Jason Curl |
last post by:
I've been reading this newsgroup for some time and now I am thoroughly
confused over what NULL means.
I've read a NULL pointer is zero (or zero typecast as a void pointer),
others say it's...
|
by: David Sworder |
last post by:
Hi,
I've created a UserControl-derived class called MyUserControl that is
able to persist and subsequently reload its state. It exposes two methods as
follows:
public void Serialize(Stream...
|
by: yossi.kreinin |
last post by:
Hi!
There is a system where 0x0 is a valid address, but 0xffffffff isn't.
How can null pointers be treated by a compiler (besides the typical
"solution" of still using 0x0 for "null")?
-...
|
by: Aaron Morton |
last post by:
I'm working on a IHttpModule that handles the PreSendRequestHeaders event
from the HttpApplication, if the event is raised after EndRequest then
HttpContext.Current is null. If it is raised before...
|
by: lovecreatesbea... |
last post by:
Do you prefer malloc or calloc?
p = malloc(size);
Which of the following two is right to get same storage same as the
above call?
p = calloc(1, size);
p = calloc(size, 1);
|
by: DolphinDB |
last post by:
The formulas of 101 quantitative trading alphas used by WorldQuant were presented in the paper 101 Formulaic Alphas. However, some formulas are complex, leading to challenges in calculation.
Take...
|
by: DolphinDB |
last post by:
Tired of spending countless mintues downsampling your data? Look no further!
In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
|
by: ryjfgjl |
last post by:
ExcelToDatabase: batch import excel into database automatically...
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by: Vimpel783 |
last post by:
Hello!
Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
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by: jfyes |
last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
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by: PapaRatzi |
last post by:
Hello,
I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
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by: CloudSolutions |
last post by:
Introduction:
For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
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by: af34tf |
last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
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by: Faith0G |
last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
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