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Published on 2010-06-08T08:10:30Z
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2010/06/08
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I need a test database to practice joins and other kinds of data retrieval operations in SQL.
What's a good free test database and RDBMS system to use on Windows?
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Concatenating string is one of the most common tasks in SQL Server and every developer has to come across it. We have to concat the string when we have to see the display full name of the person by first name and last name. In this video we will see various methods to concatenate the strings. SQL…
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Earlier this week, I was delivering Advanced BI training on the subject of “SQL Server 2008 R2″. I had great time delivering the session. During the session, we talked about SQL Server 2010 Denali. Suddenly one of the attendees suggested his displeasure for the product. He said, even though…
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I am trying to install SQL Server on Windows 2012. I was able to finally get the wizard up and running after making some changes on the server, but now it fails no matter what I do with the following error:
TITLE: SQL Server Setup failure.
SQL Server Setup has encountered the following error:
…
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I need to detect which version of SQL I am dealing with to perorm various tasks, I need specifically detect if I am on SQL 2008 or SQL Azure.
How can I do this with detection code written in SQL?
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Here is the query:
INSERT INTO @TempTable
SELECT UserID,
Name,
Address1 =
(SELECT TOP 1 [Address] FROM
(SELECT TOP 1 [Address] FROM [UserAddress] ua INNER JOIN UserAddressOrder uo ON ua.UserID = uo.UserID WHERE ua.UserID = u.UserID
ORDER BY uo.AddressOrder ASC) q
ORDER BY AddressOrder…
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I know implementing database is a huge topic, but I want to have a basic understanding of how database systems work (e.g. memory management, binary tree, transaction, sql parsing, multi-threading, partitions, etc) by investigating the source code of the database.
Since there are a few already proven…
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What is the best way of handling many-to-many relations in a RDBMS database like mySQL?
Have tried using a pivot table to keep track of the relationships, but it leads to either one of the following:
Normalization gets left behind
Columns that is empty or null
What approach have you taken in…
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In previous articles discussing Oracle and VMware, the hardware and software components consisted of a Windows-based PC and the Oracle RDBMS. Steve Callan expands upon the "Oracle in a virtualized environment" concept by looking at other alternatives for the hardware and software.
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I'm working on a system to allow multiple users to collaborate on an online project. Everything is fairly straightforward, except for keeping the users in sync. Each user has their own local copy of the project database, which allows them to make changes and test things out, and then send the updates…
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I was always taught to strive for the highest Normal Form of database normalization, and we were taught Bernstein's Synthesis algorithm to achieve 3NF. This is all very well and it feels nice to normalize your database, knowing that fields can be modified while retaining consistency.
However, performance…
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