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by: Prem |
last post by:
Hi,
I am having many problems with inner join. my first problem is :
1) I want to know the precedance while evaluating query with multiple
joins.
eg.
select Employees.FirstName, Employees.LastName, TerritoryID,
Employees.EmployeeID,
RegionID, ProductID
from Employees
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by: kieran |
last post by:
Hi,
I have the following sql statement. I originally had the statement
with two INNER JOINS but in some situations was getting an error so
changed the last INNER JOIN to a LEFT OUTER JOIN (as is seem below).
This seemed to work but i am unsure why and would like to know in case
it falls over again. Why did the two INNER JOINS not work, and am I
correct to use the LEFT OUTER JOIN in this context.
As you can see the table 'tblStaff1_2'...
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by: mheydman |
last post by:
I apologize if this has been asked before- I searched google but could
not find a concrete answer.
I recently inherited a database whose t-sql code is written in a format
that I find difficult to read (versus the format I have used for
years).
I have tested the queries below using the SQL Profiler, and both have
identical costs. Is there any advantage of one format over the other?
|
by: aarklon |
last post by:
Hi all,
In the article http://en.wikipedia.org/wiki/C_language
it is written as follows
C has the following important features:
1) A simple core language, with important functionality such as math
functions and file handling provided by sets of library routines
|
by: MP |
last post by:
Hi
trying to begin to learn database using vb6, ado/adox, mdb format, sql
(not using access...just mdb format via ado)
i need to group the values of multiple fields
- get their possible variations(combination of fields),
- then act on each group in some way ...eg ProcessRs (oRs as RecordSet)...
the following query will get me the distinct groups
|
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by: Jane T |
last post by:
I appreciate how difficult it is to resolve a problem without all the
information but maybe someone has come across a similar problem.
I have an 'extract' table which has 1853 rows when I ask for all rows where
period_ = 3. The allocation table for info has 210 rows.
I have two scripts below. The first script where I specify a period on a
join, brings back 1853 lines and works. The second script where I specify
the period in the...
|
by: Chamnap |
last post by:
Hello, everyone
I have one question about the standard join and inner join, which one
is faster and more reliable? Can you recommend me to use? Please,
explain me...
Thanks
Chamnap
|
by: Bogdan |
last post by:
Hi,
I have a stored procedure that uses JOINs to return columns from multiple
tables. I also have another stored proc that that takes a series of params
and updates multiple tables. I used the framework to auto-generate a table
adapter specifying both stored procs as Get/Fill and Update. The problem is
that columns from the JOINed table seem to marked as 'read-only' so trying
to update a row results in an exception. BTW, by default a...
|
by: shapper |
last post by:
Hello,
I am used to SQL but I am starting to use LINQ.
How can I create Left, Right and Inner joins in LINQ? How to
distinguish the different joins?
Here is a great SQL example:
http://www.codinghorror.com/blog/archives/000976.html
|
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: 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: 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: 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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