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by: Rajesh Kapur |
last post by:
We use InnoDB tables and foreign key constraints extensively. The mysqldump
backs up the database tables in alphabetical order with foreign key
constraints defined in the create statement of each table. These foreign key
constraints are violated at the time of restore. We have tried the following
two solutions...
(1) We have tried to backup the database tables in the order of their
dependencies. This works but the backup scripts need to...
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by: Jason Madison |
last post by:
We sometimes get very large databases that we want to cut down to use for
testing.
The information is all related to a central accounts table.
The way I thought of doing this is to grab all the foreign constraints and
turn them into cascade delete constraints, then delete as many accounts as I
want.
After this I will restore the constraints back to their original state.
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by: Bob Stearns |
last post by:
Why is the following constraint invalid? I want to make sure that every
row in IS3.ANIMALS_PRIV_INDEXES matches one of those in
IS3.table_var_defn with part of the primary key fixed. Since this is
illegal with the following message, how do I achieve this result? The
last thing below is a working constraint from another table.
ALTER TABLE IS3.ANIMALS_PRIV_INDEXES
ADD CONSTRAINT
FOREIGN KEY(3, variable_id)
REFERENCES...
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by: Ratman |
last post by:
I have this...
Public Property MetalID() As Long
Get
Return lMetalID
End Get
Set(ByVal Value As Long)
lMetalID = Value
End Set
End Property
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by: Jim Heavey |
last post by:
Hello,
I was setting the primary key on a table which was a collection of 3 columns.
I mispelled the name of the second column when I built the array of collumns
when I created the array of collumns for the primary key. When I used the
"dt.primarykey(myArrayOfKeys)" no exception was thrown, and rather then the
primary key being a set of 3 columns, it was only a single column.
When you make this type of mistake when setting foreign keys,...
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by: wespvp |
last post by:
I am using PostgreSQL 7.4.1 on RedHat 7.2.
The query I am executing is something like (I replaced all the return values
with 'count'):
db=> explain select count(*) from messages m join (select * from
message_recipients r join addresses a on a.Address_Key=r.Recipient where
a.Address='lra.edi@edi.cma-cgm.com') as foo on
(m.Message_Key=foo.Message_Key AND (m.Message_Date >= '29-MAR-04') AND
(m.Message_Date <= '31-MAR-04...
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by: FreeToGolfAndSki |
last post by:
Hi,
I have an Orders Table that has Employee1 and Employee2 (one is the
sales rep the other is the telemarketing rep) Both of these fields
need to cascade update against the Employees table. I can't seem to
create the desired relationship in a Diagram and I'm not sure how best
to set this up. Any ideas?
Thanks in advance...
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by: mrhodes02 |
last post by:
I have two simple tables
Employees (primary key table)
Empid, empname,title
MgrXrf (foreign key table)
MgrId,Empid
MgrID & Empid in MgrXrf have a foreign contstrant to EmpID in Employees. That works fine. I don' want to add a record to MgrXRF unless both field values exist in Employees. Problem is I also want to set the delete rule to cascade on both fields, so that if I delete an employee their record is deleted from MgrXRF no...
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by: Wes Groleau |
last post by:
INSERT INTO X ...... ( A, B, C )
INSERT INTO Y ...... ( J, K, L )
If Y has a foreign key M which is the primary key D of X,
is there an easy and/or efficient way to have SQL Server
assign D, and tell us what it is so we can add M to the
list for Y ?
I know I can select D where A, B, C but I wondered about
other tricks.
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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...
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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: 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,...
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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...
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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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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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...
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