Data Mining Part 21: Excel and Data Mining,validation methods
This article is part of the lesson 18 to 20 related to SQL Server Data Mining with Excel.
Removing Rows with the DELETE Statement in SQL Server
Greg Larsen explores how to remove rows from a SQL Server table using the DELETE statement.
SQL Monitor Custom Metric: Possible Duplicate Indexes
When a table has multiple indexes defined on the same columns, it produces duplicate indexes that waste space and have a negative impact on performance. This metric measures the number of possible duplicate indexes per database above a set threshold. You can then consider dropping the indexes and reverse the change.
Continuous Learning
It pays to continuously learn more about your job. SQL Server is so large, it really is a lifelong effort to drive yourself forward to master more and more.
Prepping for Winter
As winter approaches, many of us get ready in our personal lives, but Steve Jones notes that we might want to make sure we have regular preparation taking place on our systems for difficult times.
SQL Overview VII - SSRS Reports and Subscriptions
In the next installment of his series on the SQL Overview toolkit, David Bird looks at the information collected about SSRS.
SSIS 2012 Projects: Setup, Project Creation and Deployment
It used to be that SQL Server Integration Services (SSIS) packages had to be deployed individually. Now, they can be all deployed together from a single file by means of the Project Deployment Model introduced in SSIS 2012. Where there are tens or hundreds of SSIS packages to deploy, this system is essential.
Bucket List Data
This Friday Steve Jones is looking to see what data you're tracking about your life.
ETL Performance Auditing - Part 3: Auditing Data Warehouse Phase
Easy way to setup a comprehensive ETL Performance auditing Solution no matter how complicated your ETL setup.
Blogs
Automated SQL Server Benchmarking with HammerDB and Docker: A Complete Testing Framework
I’m excited to announce the release of a new open-source project that fully automates...
T-SQL Snapshot Backups on Availability Group Secondary Replicas
One of my favourite features of SQL Server 2022 was the T-SQL Snapshot Backups....
The Book of Redgate: Hours
By Steve Jones
I have said and written this many times: Redgate Software is the type of...
Forums
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Question of the Day
ORDER BY alias
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers