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by: George Dainis |
last post by:
How do I code a SQL SELECT statement so that always only this record is retrieved
which matches a certain criteria AND has the lowest ID (= value in key field aaa)?
It must me something like
SELECT * FROM .... WHERE somefield='somevalue' AND aaa=lowestkey(column(aaa))
As a result either zero or at most 1 record should be passed back.
George
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by: MP |
last post by:
Greets,
context: vb6/ado/.mdb/jet 4.0 (no access)/sql
beginning learner, first database, planning stages
(I think the underlying question here is whether to normalize or not to
normalize this one data field - but i'm not sure)
:-)
Background info:
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by: Craig |
last post by:
In ASP.NET 2.0 and the formview control how do you get the value of the
identity field of a newly inserted record?
In ASP.NET 1.1 after the new record was saved you just said
intNewIdentityID = Dataset.tblMtTable.IndentityID
Simple but can't seem to do it in the formview.
Thanks
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by: Andy |
last post by:
Hi All.
I'm working for a company that has set out a guideline for retrieving
data from a database. Nobody can explain to me the reason for the
following.
When retrieving a set of records from database to a VB.net app, they
retrieve the database fields as a record set
eg. "select name, suburb from myTable"
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by: Rico |
last post by:
Hello,
I am in the midst of converting an Access back end to SQL Server Express.
The front end program (converted to Access 2003) uses DAO throughout. In
Access, when I use recordset.AddNew I can retrieve the autonum value for the
new record. This doesn't occur with SQL Server, which of course causes an
error (or at least in this code it does since there's an unhandled NULL
value). Is there any way to retrieve this value when I add a...
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by: Ian Davies |
last post by:
Hello
Needing help with a suitable solution.
I have extracted records into a table under three columns 'category',
'comment' and share (the category column also holds the index no of the
record in a hidden field)
I wish the user to be able to edit the data in the table, so I have
extracted the records into hiddenfield, textareas, dropdown list and
checkbox so that they can make changes.
I named these elements as arrays and wish to run an...
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by: Finn Stampe Mikkelsen |
last post by:
Hi
I have defined a table in my database, with 2 date-fields. I have set a
default value to DBNull. I have integrated a nullable datetimepicker control
to my project and set the apropriate NullValue in my datagridview...
Everything works great, with a table-row added manually to the database,
without setting any value to the second date-field. Both the datagridview
and the datetimepicker displays correctly the DBNull value..
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by: ADezii |
last post by:
One question which pops up frequently here at TheScripts is: 'How do I retrieve data from a Recordset once I've created it?' One very efficient, and not that often used approach, is the GetRows() Method of the Recordset Object. This Method varies slightly from DAO to ADO, so for purposes of this discussion, we'll be talking about DAO Recordsets. The ADO approach will be addressed in the following Tip. We'll be using a Query, consisting of 5...
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by: ADezii |
last post by:
Last Tip, we demonstrated the technique for retrieving data from a DAO Recordset, and placing it into a 2-dimensional Array using the GetRows() Method. This week, we will cover the same exact Method (GetRows()), but only as it applies to an ADO Recordset. Although there are similarities in the 2 methodologies, the ADO Method offers 2 more Optional Arguments, is a little more complex, and of course, the syntax is different in creating the...
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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: 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...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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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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