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Editorial - Rogue Algorithms |
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I have always thought that computers do some amazing things, but they tend to do what we tell them to do, even if what we tell them to do is not what we want them to do. In those cases we usually find computers are helping us make mistakes faster than ever before. As we automate and link more and more systems, this can become a bigger and bigger problem in the world. I ran across this short link on a rogue algorithm that caused a fluctuation in a number of stocks. It looks like this was a case of poor analysis and poor QA at one firm, but imagine if we had some type of "update" released to a large number of companies? This type of problem could cause a dramatic short term fluctuation in the stock market, which shouldn't affect most of us in the long run, but you never know. If this caused a company to go out of business, and they were the company holding your retirement savings, you might feel differently. This isn't necessarily a problem that affects just financial institutions and their custom software. This is potentially a problem in any business that writes its own algorithms. That includes many of our companies, and many of us. We write queries, reports, and develop algorithms that help "the business" analyze data and make decisions that can affect our companies. This is worrisome to me, especially when we have companies that press for more and more analysis, with algorithms written more and more quickly to respond to business events. Success in this area often depends on the developer having an understanding of the nature of the business and the meaning of data, and strong working relationships with the business analysts. That comes over time, and is easily lost when employee turnover is too high. I hope that companies are learning that there is value to retaining employees, especially those that work with data and have invested effort in learning more about their business. Unfortunately I think that it take a disaster like this for some managers to understand the value of retaining employees and their knowledge. Even more unfortunate is the fact some managers never learn that. » Join the debate, and respond to today's editorial on the forums The Voice of the DBA PodcastsWe publish three versions of the podcast each day for you to enjoy.
The podcast feeds are available at sqlservercentral.mevio.com. Comments are definitely appreciated and wanted, and you can get feeds from there. Overall RSS Feed: Today's podcast features music by Everyday Jones. No relation, but I stumbled on to them and really like the music. Support this great duo at www.everydayjones.com.
You can also follow Steve Jones on Twitter: » To submit an article, rant or editorial, log in to the Contribution Center |
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Question of the Day |
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Today's Question: For SQL Server 2008 or later, given the following table:
CREATE TABLE dbo.Table1 (
RowID INTEGER IDENTITY PRIMARY KEY CLUSTERED,
DateTimeStamp DATETIME DEFAULT GETDATE(),
Col1 INTEGER SPARSE,
Col2 INTEGER SPARSE,
Col3 INTEGER SPARSE,
TblColumnSet XML COLUMN_SET FOR ALL_SPARSE_COLUMNS);
What will be the result of the following statements?
INSERT INTO dbo.Table1 (Col1) VALUES (1), (2);
INSERT INTO dbo.Table1 (Col2) VALUES (3), (4);
INSERT INTO dbo.Table1 (Col3) VALUES (5), (6);
INSERT INTO dbo.Table1 (TblColumnSet) VALUES ('<Col1>1</Col1><Col2>2</Col2><Col3>3</Col3>');
SELECT RowID, DateTimeStamp, Col1, Col2, Col3, TblColumnSet
FROM dbo.Table1;
Think you know the answer? Click here, and find out if you are right. This question is worth 1 point in this category: Sparse Columns. We keep track of your score to give you bragging rights against your peers. We'd love to give you credit for your own question and answer. To submit a QOD, simply log in to Contribution Center. |
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Yesterday's Question of the Day |
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DECLARE @Table AS Table (SlNo INT,Name VARCHAR(500),Salary MONEY NOT NULL)
BEGIN TRY
BEGIN TRANSACTION
INSERT INTO @Table Values(1,'SQL 2005',2005)
INSERT INTO @Table Values(2,'SQL 2008',NULL)
INSERT INTO @Table Values(3,'SQL 2012',2012)
COMMIT TRANSACTION
SELECT * FROM @Table
END TRY
BEGIN CATCH
ROLLBACK TRANSACTION
SELECT * FROM @Table
END CATCH
How many rows will be returned in SQL Server 2008? Answer: 1 Explanation: The "ROLLBACK TRANSACTION" does not work with table variables. The second insert query will return error and will jump to the "BEGIN CATCH" Block, and the select will return 1 row. Ref: Table Variables - http://msdn.microsoft.com/en-us/library/ms175010.aspx |
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Professional SQL Server 2012 Adminstration Microsoft SQL Server 2012 will have major changes throughout the SQL Server and will impact how DBAs administer the database. With this book, a team of well-known SQL Server experts introduces the many new features of the most recent version of SQL Server and deciphers how these changes will affect the methods that administrators have been using for years. Loaded with unique tips, tricks, and workarounds for handling the most difficult SQL Server admin issues, this how-to guide deciphers topics such as performance tuning, backup and recovery, scaling and replication, clustering, and security. Get your copy from Amazon today. |
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SQL Server 2012 T-SQL Recipes: A Problem-Solution Approach SQL Server 2012 T-SQL Recipes is an example-based guide to the Transact-SQL language that is at the core of SQL Server 2012. It provides ready-to-implement solutions to common programming and database administration tasks. Learn to create databases, insert and update data, generate reports, secure your data, and more. Tasks and their solutions are broken down into a problem/solution format that is quick and easy to read so that you can get the job done fast when the pressure is on. Get your copy from Amazon today. |
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Featured Script |
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Insert Update Stored Procedure for a tableGeneric Script for Insert Update Stored Procedures More » |
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Database Pros Who Need Your Help! |
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Article Discussions by Author : Discuss Content Posted by Leo PeysakhovichHow to find the status of a job in sql server 2005 (started,running, finished) - Hi guys, I stuck in an issue with sql server jobs. and struggling from 4 days to resolve the issue. I am... |
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Stairway to T-SQL DML Level 9: Adding Records to a table using INSERT Statement
SQL in the City - Austin 2012
SQLskills training goes online worldwide (and free in September!)
Upgrading SSIS Custom Components for SQL Server 2012
