Is a RID Lookup faster than a Key Lookup?
For T-SQL Tuesday #78, Aaron Bertrand takes a look at whether RID Lookups are faster than Key Lookups, with a small battery of fairly simple duration tests.
For T-SQL Tuesday #78, Aaron Bertrand takes a look at whether RID Lookups are faster than Key Lookups, with a small battery of fairly simple duration tests.
A great developer is worth more than an average one, but how much more? Steve Jones has a few thoughts for you to think about.
When wrestling with technical problems or ideas, it is good to discuss with, argue against, present ideas to, and listen to your colleagues. This is true of anyone working in IT, but really important for the likes of database professionals who are engaged in a very rapidly-developing engineering specialism that demands that you keep up […]
The most frustrating thing with any new system is often just working out how to connect to it. Oddly, you can’t use SSMS with SQL Data Warehouse, but it is fine with SSDT, SSIS, Power BI desktop, sqlcmd, BCP, and a range of Microsoft cloud services - there are PowerShell Cmdlets too. Rob Sheldon provides the details.
Today we have a guest editorial from Kellyn Pot'Vin that tackles the tough topic of diversity.
This article describes methods of creating dynamic queries without the use of dynamic SQL to efficiently access large tables.
SQL Server database developers seem reluctant to use diagrams when documenting their databases. It is probably because it has, in the past, been difficult to automatically draw precisely what you want, other than a vast Entity-relationship diagram. However, you can do it without buying any third-party tool, just using some existing Java-based open-source tools; and can even automate it entirely, using SQL and PowerShell. Phil Factor shows how.
Diagnosing and resolving parallelism-related latching and blocking in SQL Server using DMV’s, the activity monitor, procedure execution plans, and index tuning.
Today we have a guest editorial from Andy Warren that looks at the decision to leave a job. Or not.
Ayo Olubeko talks through the improvements being made to SQL Server tooling in 2016.
By Ed Elliott
Running tSQLt unit tests is great from Visual Studio but my development workflow...
By James Serra
I remember a meeting where a client’s CEO leaned in and asked me, “So,...
By Brian Kelley
If you want to learn better, pause more in your learning to intentionally review.
Hello team Can anyone share popular azure SQL DBA certification exam code? and your...
Comments posted to this topic are about the item Faster Data Engineering with Python...
Comments posted to this topic are about the item Which Result II
I have this code in SQL Server 2022:
CREATE SCHEMA etl;
GO
CREATE TABLE etl.product
(
ProductID INT,
ProductName VARCHAR(100)
);
GO
INSERT etl.product
VALUES
(2, 'Bee AI Wearable');
GO
CREATE TABLE dbo.product
(
ProductID INT,
ProductName VARCHAR(100)
);
GO
INSERT dbo.product
VALUES
(1, 'Spiral College-ruled Notebook');
GO
CREATE OR ALTER PROCEDURE etl.GettheProduct
AS
BEGIN
exec('SELECT ProductName FROM product;')
END;
GO
exec etl.GettheProduct
When I execute this code as a user whose default schema is dbo and has rights to the tables and proc, what is returned? See possible answers