<b>VoIP Planet:</b> "Open source software is being used today by all types of companies and organizations—even the Republican Party is an adopter."
<b>Linux Planet:</b> "OpenOffice.org isn't the only game in town for open source word processing. One of the best, and underexposed, open word processors is AbiWord."
<b>Linux Planet:</b> "The open source desktop world got a boost this week with the release of GNOME 2.30 -- the latest incarnation of one of the leading open source desktop GUIs that's a part of nearly every major Linux distribution."
<b>Linux Planet:</b> "The market for CentOS Linux-based appliances continues growing, thanks in part to a new network-monitoring virtual appliance from GroundWork and commercial support services from OpenLogic."
<b>Linux Planet:</b> "Canonical, the lead commercial sponsor of the Ubuntu Linux distribution, is out with a new study this week looking at how users view and use their server platform."
This error occurs when trying to insert into a column containing an identity. An Identity column is not able to be inserted into without the use of a special command mentioned below. Identity columns are columns that automatically increment when a value is inserted into a row. They are commonly used [...]
When one trigger inserts into a table and that table also contains a trigger, this is a “nested trigger”. The reason that nested triggers are a concern is because the first call that performs the initial insert does not return until the last trigger in sequence is complete. In trying to circumvent this [...]
The OPENQUERY command is used to initiate an ad-hoc distributed query using a linked-server. It is initiated by specifying OPENQUERY as the table name in the from clause. Essentially, it opens a linked server, then executes a query as if executing from that server. While executing queries directly and receiving data directly in this [...]
While the row_number feature in sql 2005+ has proven to be a very powerful feature, there are still ways to implement that same functionality in SQL Server 2000. Let’s first look at the SQL 2005+ implementation of ROW_NUMBER, then compare it to the SQL 2000:-- SQL 2005+ SELECT RowNumber = ROW_NUMBER() OVER (ORDER BY c.LastName ASC) ,c.LastName ,c.FirstName FROM [...]
The most efficient method of copying a result set into a new table is to use the SELECT INTO method. This method also follows a very simple syntax. [/sql] SELECT * INTO dbo.NewTableName FROM dbo.ExistingTable [sql] Once the query above is executed, all the columns and data in the table ExistingTable (along with their datatypes) will be copied into a [...]
In SQL Server, boolean values can be represented using the bit datatype. Bit values differ from boolean values in that a bit can actually be one of three values 1, 0, or NULL; while booleans can only either be true or false.
When assigning bits, it is best to use 1 or zero [...]
Many Oracle developers trying to find the SQL Server function compatible with their Contains clause will most likely accidently end up on this page. Therefore, this page will be devoted to them rather than the SQL Server’s Contains function which is used for full-text searching. The most similar function to Oracle’s contains is charindex. The usage [...]
In creating a database you also need to check whether or not the database already exists. In order to do so, simply use the ‘if exists’ method and select the name of the database from sysdatabases.IF NOT EXISTS (SELECT name FROM master.dbo.sysdatabases WHERE name = N'SQLServerPlanet') CREATE DATABASE [SQLServerPlanet]The code below will drop an [...]
This is a topic I find very little information written about, however it is very important that the method for extracting data be done in a way that does not hinder performance of the source system. In this example, the goal is to extract data from a source system, into another database (or server) all [...]
The SQL Rank function was introduced in SQL Server 2005 and is part of a family of ranking functions. In order to explain the SQL Rank function, we need to look at it in context with the other rank functions.RANK DENSE_RANK ROW_NUMBER NTILEThis list may seem overwhelming, however most of the ranking functions are rather similar. First, the [...]
The SQL Server Select statement is the first statement used when returning data. It is the most used and most important statement in the T-SQL language. The Select statement has many different clauses. We will step through each clause further in the tutorial, however now, we will look at Select itself.
The following [...]
If you landed on this article, then you most likely know that temp tables can cause recompilation. This happens because temp tables are treated just like regular tables by the SQL Server Engine. When the tables (in which underlying queries rely on) change significantly, SQL Server detects this change (using auto update statistics) [...]
When scripting out jobs using ssms (sql server management studio) the default script for a drop statement is to drop the job according to it’s job_id. This is not beneficial however when pushing code to different environments. Job_id’s are specific to the windows environment in which they are created. To get around [...]
To add a user or group to a role, you need to use sp_addrolemember. This procedure is easy to use as it only accepts two parameters, the role name, and the username (or group). Roles are utilized in order to provide a layer of abstraction from permissions from being applied directly to users. While [...]
A very common scenario when querying tables is the need to find duplicate items within the same table. To do this is simple, it requires utilizing the GROUP BY clause and counting the number of recurrences. For example, lets take a customers table. Within the customers table, we want to find all [...]
The clustered index on a table can be defined as: the sort order for how the data for the table is actually stored. Being that the clustered index is the actual data itself, you cannot have two clustered indexes. You can however have many non clustered indexes. These non clustered indexes are [...]
The oracle function equivalent to the SQL Server function of Substr is: Substring. All spelled out. This function is actually identical to Oracle’s function.DECLARE @BaseString varchar(max)SET @BaseString = 'My grandmothers pillows are blue'SELECT SUBSTRING ( @BaseString -- The base string to extract from ,4 -- Start Position ,5 -- Length of Characters )The above query returns the value ‘grand’. Related Posts:»SQL Server Contains [...]
The SQL Server cast function is the easiest data type conversion function to be used compared to the CONVERT function. It takes only one parameter followed by the AS clause to convert a specified value. A quick example is the following:SELECT UserID_String = CAST(UserID AS varchar(50)) FROM dbo.UserThis example will convert the integer to a character value. [...]
Adding a primary key can be done either after a table is created, or at the same a table is created. It is important to note, that by default a primary key is clustered. This may or may not be the preferred method of creation. For more information on clustered vs non [...]