Column Store Index, a new feature in SQL Server 2012, improves performance of data warehouse queries several folds. Arshad Ali shows you how to create column store index, and how to use index query hint to include or exclude a column store index.
One of the really classic analogies in software is that it's like building a house. You have a foundation, multiple teams, lots of contractors that specialize in something, etc. And it's an analogy that's debated as to its relevance over and over. I won't go into the correctness of this analogy, but I wanted to comment on it.
The challenge is to compare the data of the rows and group the input data. The data needs to be grouped based on the Product ID, Date, TotalLines, LinesOutOfService.
Your data is in the public domain and as a DBA you need to be very familiar with what it is possible for the sinner to do with a handy password, and how easily that sinner can get hold of it.
Recently while working on a project to import data from an Excel worksheet using SSIS, I realized that sometimes the SSIS Package failed even though when there were no changes in the structure/schema of the Excel worksheet. I investigated it and I noticed that the SSIS Package succeeded for some set of files, but for others it failed. I found that the structure/schema of the worksheet from both these sets of Excel files were the same, the data was the only difference. How come just changing the data can make an SSIS Package fail? What actually causes this failure? What can we do to fix it?
Jonathan Lewis (Oracle Ace Director, OakTable Network) and Grant Fritchey (Microsoft SQL Server MVP) will host a live discussion on Oracle and SQL Server, this time in relation to temporary tables.
There was an interesting article about how telecommuting is the secret to employee happiness and it makes some sense in today's fast-paced, highly connected world. There are a number of job surveys that list flexible hours as one of the most desired benefits.
Changing the structure of a very large table doesn't need to require a maintenance window.
This guide details high-level performance numbers expected and a set of best practices on getting optimal performance when using Data Quality Services (DQS) in SQL Server 2012 with Cumulative Update 1.
This article will demonstrate a method of creating an Excel-based CPU/scheduler performance dashboard for SQL Server 2005+.
Efficient query performance in Amazon Redshift often comes down to how well you manage...
By gbargsley
Welcome back to PowerShell Strikes Back. We’re three weeks in, and the training is...
By Steve Jones
Last week I was honored with a trip to Rome for the Redgate President’s...
Comments posted to this topic are about the item Why Your Index Isn't Being...
Comments posted to this topic are about the item Distance Metric Algorithms
Comments posted to this topic are about the item What Can AI Really Do?
What are the distance metric algorithms that can be used in VECTOR_DISTANCE()?
See possible answers