|
by: Mark Davenport |
last post by:
Hi,
Here's my question: How do I pass a NULL value in a variable to a
MySQL DB?
Here's an overview of my problem: I have a PHP page that processes
code, then inserts the code into a database. Very straightforward.
But, some NULL values are being inserted as a blank space, or the
string "NULL" instead of a true NULL.
|
by: Martin |
last post by:
Hello,
I'm new with triggers and I can not find any good example on how to
do the following:
I have two tables WO and PM with the following fields:
WO.WONUM, VARCHAR(10)
WO.PMNUM, VARCHAR(10)
WO.PROBLEMCODE, VARCHAR(8)
|
by: serge |
last post by:
I have a scenario where two tables are in a One-to-Many relationship
and I need to move the data from the Many table to the One table so
that it becomes a One-to-One relationship.
I need to salvage the records from the many table and without going
into detail, one of the reasons I can't do the opposite as
there are records in the ONE table that I need to keep even if they
don't have any child records in the MANY table.
Below I created...
|
by: Python_it |
last post by:
Python 2.4
MySQL-python.exe-1.2.0.win32-py2.4.zip
How can I insert a NULL value in a table (MySQL-database).
I can't set a var to NULL? Or is there a other possibility?
My var must be variable string or NULL.
Becaus i have a if statement:
if ....
cursor.execute(".................insert NULL ..............")
if ....
|
by: Philip Boonzaaier |
last post by:
I want to be able to generate SQL statements that will go through a list of
data, effectively row by row, enquire on the database if this exists in the
selected table- If it exists, then the colums must be UPDATED, if not, they
must be INSERTED.
Logically then, I would like to SELECT * FROM <TABLE>
WHERE ....<Values entered here>, and then IF FOUND
UPDATE <TABLE> SET .... <Values entered here> ELSE
INSERT INTO <TABLE> VALUES <Values...
|
|
by: Abareblue |
last post by:
I have no clue on how to insert a record into access. here is the whole
thing
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
|
by: authorking |
last post by:
I use the following code to insert a data record in to a datatable of an
access database.But every time I execute the command, there will rise an
exception and the insert operation can't be completed.
here's the code:
System.Data.OleDb.OleDbConnection hist_cnn = new
System.Data.OleDb.OleDbConnection();
System.Data.OleDb.OleDbCommand hist_command = new
System.Data.OleDb.OleDbCommand();
|
by: authorking |
last post by:
I create the databse with the follwing code. I really don't know why the
insert operation can't be completed.
databse creation code:
ADOX.CatalogClass cat = new ADOX.CatalogClass();//define a Jet database
class
cat.Create("Provider=Microsoft.Jet.OLEDB.4.0;" + "Data
Source=history_data.mdb;" + "Jet OLEDB:Engine Type=5");//create a Jet
database
System.Data.OleDb.OleDbConnection hist_cnn = new
System.Data.OleDb.OleDbConnection();
|
by: oranoos3000 |
last post by:
hi
i have an error with enter record to table in database(mysql)
structure of my table is as follow
- phpMyAdmin SQL Dump
-- version 2.11.6
-- http://www.phpmyadmin.net
--
-- Host: localhost
|
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, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
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...
|
|
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: 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: 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...
|
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...
|
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
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
|
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
|