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by: lawrence |
last post by:
Google can't find me a good example of how to use the "if exists"
syntax in MySql. Is it right that to use it this way:
INSERT INTO IF EXISTS tMyTable VALUES("xxlk", "lkjlkjlkjljk")
I want to insert into a table but only if the table exists.
How does one, in general, from PHP, test for the existence of a table,
without getting an error message?
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by: Jason Charalambides |
last post by:
I set a program to automatically load values from a temporary file.
However, there is a chance that the specific temporary file "C:\Temp\TU.tmp"
may not exist at all. In that case I want that specific routine to be
skipped. I guess this is a simple
If (that file exists)
Open "C:\Temp\TU.tmp" For Input As #3
etc.......
Else
GoTo
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by: David |
last post by:
My email application was working a couple of weeks ago,
then all of a sudden I get
Error Type:
(0x8009000F)
Object already exists.
I checked the permissions on the machinekeys directory
like the KB article said it still doesn't work. Does
have any ideas?
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by: Uttam |
last post by:
Hello,
How does one suppress the "Object already exists" message when the
following statement is executed in ADO?
cat.Views.Append "Some_Query", cmd
Thanks in advance.
Uttam
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by: gn |
last post by:
I am a VB.Net newbie and have tried to search for this answer without
success - What is the exact syntax to test if
HttpContext.Current.Application("var") exists in vb.net
I have tried:
If (HttpContext.Current.Application("var").ToString) <> "" Then
That gives me System.NullReferenceException: Object reference not set
to an instance of an object Error, I suspect because I am trying to
|
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by: Nicolas Castagne |
last post by:
Hi all,
I have been wondering for a while why function hiding (in a derived
class) exists in C++, e.g. why when writing
class Base {
void foo( int ) {}
};
class Derived: public Base {
void foo( char const ) {}
};
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by: Pete |
last post by:
I successfully use "My.Computer.Network.DownloadFile", including the
authentication data, but I would appreciate learning how to first test
whether the file exists on the remote computer. Thanks.
- Pete
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by: nickvans |
last post by:
Hello all,
I have (hopefully) an easy question for you all. I'm running Access '03 and have created a pile of VBA code to create a form and some queries related to each control in the form. (Basically, it uses structured naming conventions to create a form with a bunch of combo boxes that allow the user to easily add and remove controls... anyway--)
I am using the statement
With CurrentDb
.QueryDefs.Delete ("qryName")
Set qrydef =...
|
by: itsraghz |
last post by:
Hello All,
I remember in MySQL we do have "IF EXISTS", 'IF NOT EXISTS" clause/keyword in the DDL statements (CREATE,DROP etc.,) to avoid unnecessary bombing.
Do we have such facility in Oracle? If not is there any other easy way to achieve it? I am using Oracle 10g. I have been searching through google and also in oracle.com but unable to get it out.
Thanks,
Raghavan alias Saravanan M.
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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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...
|
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 protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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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...
|
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...
|
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: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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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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