| |
by: Prince Kumar |
last post by:
Is there any way I can define an Unique constraint or unique index
which allows more than one null values for the same column combination
in DB2?
ie, If my index is defined on (col3, col4) where both columns allow
nulls, I want col3 + col4 to be unique, if one or both the columns
have values. If both columns have nulls, it should allow more than one
such rows.
ex,
|
by: Hans-Dieter Franz |
last post by:
Hello,
I have a problem with a Java user-defined stored procedure
and the "alter sequence" statement. I use DB2 8.1.2 and had the
same problem with 8.1.0, but not with 7.*.
I get the following message:
SQL0206N "dipf.AENDERUNGSLISTE_SEQ" ist in dem verwendeten Kontext
ungültig.
|
by: Alanoly J. Andrews |
last post by:
Hi,
I have two tables (that I know of) in a database that seem to be
corrupted. All SQL statements on the tables hang, "select * from..",
"select count (*) from", "delete from..". I can't even drop the
tables as the "drop table..." statement, too, hangs. But the
tables do exist as they show up in "describe table <tabname> ".
A "create table" statement fails saying that the table already
exists.
|
by: Daniel Chou |
last post by:
Hello,
I have two questions about "not logged initially":
1. Before using "alter table tbname activate not logged initially",
should the table be created with "not logged initially"?
2. After using "alter table tbname activate not logged initially",
how to deactivate it?
|
by: elvin |
last post by:
Okay - apologize in advance for the length, but I want to make sure
all you knowledgeable and helpful people have all the details you need
to hopefully point my newbie rear in the right direction.
I've got a fairly complex (a lot more complex than originally
intended) database with three main tables. The database is designed
to track information about certain files. The tables are set up with
one to one relationships, primarily because...
|
| |
by: Larry R Harrison Jr |
last post by:
I have an Access 97 database with 2 tables that have a one-many
relationship. I have a SQL statement in the "one" table which I want to
execute and insert 7 records into the "many" table, and I want them to be
linked to the "main" table.
Problem is, it won't let me run the SQL run as long as the one-many
relationship is established in the relationship window.
The SQL is:
|
by: Tomba |
last post by:
I have a really annoying problem, which i tried solving for almost 3 days now. (I googled in any variation i could think of, but i couldn't find anything that will help my stupid me understand:\)
I'm trying to use a ALTER TABLE ALTER COULMN to change the datatype of a certain column in a table i'm importing by code from an .xls to my access database.
I'll cut to the chase and paste the code:
Option Compare Database
Option Explicit
...
|
by: AccessIdiot |
last post by:
Argh! Just when I think everything is working and I am doing one final test before showing it to the guys I built the db for, Access throws out a weird message and won't let me add a record. But only SOMETIMES.
I am getting "You cannot add or change a record because a related record is required in table "tbl_Entrianment". The only thing that relates the two tables in question is the Entrainment_ID WHICH I CAN SEE ON MY FORM.
Let me back...
|
by: Rahul Babbar |
last post by:
Hi,
I ran the scripts in a file from Command Line Processor and it gave
the error for all the constraints being added, but not the indexes
being added.
For a simple statement like
Alter table A add constraint A_const foreign key(col1) references
B(col2);
|
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: 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,...
|
| |
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: 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: 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
|
15
