Performance tuning is a creative process which requires a lot of attention and manual work. SQL Server 2016's Query Store makes some of this work much easier, but what if you're using an earlier version? Fikrat Azizov shows how to automate assessing SQL Server query performance changes by using custom performance collection tools and reports.
2016-06-23
4,487 reads
In this article Greg Larsen explores using the temporal table feature of SQL Server 2016 to create a history table for an existing SQL Server table.
2016-06-22
3,450 reads
Azure SQL Data Warehouse uses SQL to query the data, but there are some differences to SQL Server's dialect of TSQL, and queries don't necessarily work in the same way. DBAs are also required to use SSDT to access Azure SQL Data Warehouse. It is worth taking the time to try the preview of the product, and take it for a 'spin around the block', following Robert Sheldon's walk-through.
2016-06-21
4,892 reads
Jonathan Kehayias takes a closer look at a new trace flag that allows you to process multiple concurrent statistics updates on the same table.
2016-06-20
2,991 reads
In SQL Server Master Data Services all the entities are organized in a model. Once a model is ready to be released to subscribers, it should be frozen and marked as ready for subscribers. Until a model is marked as ready, a model is typically deemed as work in progress. In this article, Siddarth Mehta covers the standard process that's required to release a completed version of the model to subscribers.
2016-06-17
2,721 reads
Knut Jürgensen shares his experiences, both positive and negative, with regard to the function that Master Data Management fulfils within a company. Too often this critical aspect of a business is overlooked or pushed aside without paying it the attention it deserves based on the cost benefits available.
2016-06-16
4,935 reads
In the third part of his series on Row Level Security (RLS), Greg Larson shows how to disable RLS for database administrators, sysadmins, and database owners.
2016-06-15
6,385 reads
Paul White discusses the internals of SQL Server's WITH ENCRYPTION clause, and explains why it is not as safe as you might think.
2016-06-14
3,877 reads
The worst part for a DBA of getting started with PowerShell is often just figuring out the best way of working with SQL Server. The most suitable approach to accessing SQL Server depends on the sort of task you need to produce a script for. Laerte Junior aims at a simple guide to the most common approaches and when to use them.
2016-06-14
3,826 reads
Automated configuration management is simpler with Desired State Configuration (DSC) and Push mode, but what is the best way to use DSC to automate deployments on your machines? ‘Push’ mode or ‘Pull’ mode? How can you reduce configuration-drift over time? Nicolas Prigent describes the second DSC deployment mode: Pull mode.
2016-06-13
3,500 reads
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
Comments posted to this topic are about the item How We Handled a Vendor...
Comments posted to this topic are about the item Cognitive Coverage
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