Introduction to Indexes: Part 2 – The clustered index
In the second part of her series on indexing, MVP Gail Shaw examines clustered indexes. Learn what this index is, how it differs from a heap, and how it can help your queries.
Starting to Program
This Friday Steve Jones asks what resources might help the new DBA learn to program better. Pick the language of your choice and let us know what resources have worked well for you.
Trash Destination Adapter
The Trash Destination and this article came from early experiences of using SSIS and community feedback at the time. When developing a package it is very useful to have a destination adapter that does nothing but consume rows with no setup requirement. You often want run a package part way through development, or just add a path so you can set a Data Viewer. There are stock tasks that can be used, but with the Trash Destination all columns are treated as selected automatically (usage type of read-only), so the pipeline knows they are required.
Advanced SSIS Fuzzy Matching via Record Linkage Methodology
Greatly improve SSIS Fuzzy Grouping performance by using a Conditional Split and Multi Cast.
Clouds, Costs, and Data Analytics
The cloud can be good or bad for your company, but it can easily be a costly endeavor that doesn't save you money. Steve Jones some data analysis is needed to ensure you have a cost effective cloud infrastructure.
Steps to clean up orphaned replication settings in SQL Server
Learn how to clean up your orphaned replication settings.
Indexes, Indexes, Indexes
This article has a description of an index utilization tool that Ron Johnson uses to analyze the effectiveness and use of indexes in a system.
TSQL Challenge 81 - Create a Game schedule generator in TSQL
This challenge is to generate a game scheduler based on the Teams given in a table.
Blogs
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
Monday Monitor Tips: Virtual Machine Usage and Cost
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
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How We Handled a Vendor Retry That Loaded Twice in Snowflake
Comments posted to this topic are about the item How We Handled a Vendor...
Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers