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SQL Server random numerics data generation using CLR

You need to generate random data directly into SQL Server table columns or close to the database engine as variables or expressions. Looking at the SQL Server available functions, you notice that only RAND function offers support for random data generation. Although RAND([seed]) is a built-in function, it can only return a float value between 0 and 1, and has other limitations in regards to seed values. Because your table columns may be of various data types, and each data type may have a lower value and an upper value, you would prefer to create your custom random data generators. This is when SQL Server CLR functions come into play and provide a viable solution.

2011-03-24

3,275 reads

Technical Article

Naturally Increasing Data Value with Hierarchical Structures

Hierarchical structures have an inherent ability for significant data value increases beyond the data collected. This will be shown to exist in hierarchical structures and even more powerfully in their natural hierarchical processing capabilities. These will demonstrate flexible and efficient ways to increase data value automatically and will be discussed in this article. SQL will be used to perform a wide range of hierarchical processing operations that easily demonstrate these increasing data value capabilities.

2011-03-23

3,291 reads

External Article

Using Dynamic SQL in Stored Procedures

Dynamic SQL allows stored procedures to “write” or dynamically generate their SQL statements. The most common use case for dynamic SQL is stored procedures with optional parameters in the WHERE clause. These are typically called from reports or screens that have multiple, optional search criteria. This article describes how to write these types of stored procedures so they execute well and resist SQL injection attacks.

2011-03-22

7,301 reads

Technical Article

Mouse Clicks, Reactive Extensions and StreamInsight Mashup

I had an hour spare this afternoon so I wanted to have another play with Reactive Extensions in .Net and StreamInsight. I also didn’t want to simply use a console window as a way of gathering events so I decided to use a windows form instead. The task I set myself was this. Whenever I click on my form I want to subscribe to the event and output its location to the console window and also the timestamp of the event.

2011-03-18

2,408 reads

External Article

SQL Server 2008 and 2008 R2 Integration Services - Managing Local Processes Using Script Task

SQL Server 2008 R2 Integration Services includes a number of predefined tasks that implement common administrative actions to help with data extraction, transformation and loading (ETL). While in a majority of cases they are sufficient to deliver required functionality, there might be situations where an extra level of flexibility is desired.

2011-03-17

3,010 reads

External Article

Lipoaspiration in your SQL Server Database

Once, when disk space was at a premium, DBAs fought hard to keep the size of their database down. Now there seems less motivation to 'fight the flab' of a database. Fabiano Amorim was watching television recently when the subject matter, cosmetic surgery, gave him the theme and inspiration for this guide to keeping your database fit and trim.

2011-03-16

4,312 reads

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Question of the Day

Adding and Dropping Columns I

I have this table in my SQL Server 2022 database: 

CREATE TABLE [dbo].[CityList]
(
[CityNameID] [int] NOT NULL IDENTITY(1, 1),
[CityName] [varchar] (30) COLLATE SQL_Latin1_General_CP1_CI_AS NULL
) ON [PRIMARY]
GO
I decide to add two new columns for the StateProvince and Country. What code should I use?

See possible answers