Kathi Kellenberger


SQLServerCentral Editorial

Bad Managers

I’m constantly hearing stories about terrible managers, and, of course, I’ve experienced quite a few myself. In fact, I can’t come up with many nice things to say about most managers when I look back over my career. (Luckily, my manager at Redgate is wonderful!) Early in my tech career, I was working at a […]

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2020-05-16

191 reads

SQLServerCentral Editorial

The SQL Community Steps up in Time of Need

Healthcare workers are some of the many heroes working bravely in the face of the Covid-19 pandemic. To protect themselves and their patients, they must wear face masks during their entire shifts. This causes a great deal of ear irritation, so a strap was designed to make wearing the masks easier and alleviate pressure on […]

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2020-04-18

134 reads

SQLServerCentral Editorial

Azure Data Studio and Deployment Notebooks

Azure Data Studio (ADS) is a cross-platform tool that you can use to run T-SQL queries much as you have done using SQL Server Management Studio. No, the databases do not need to be hosted in Azure; the tool works fine for on-premises SQL Servers as well. I’ve started using ADS more as I teach […]

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2020-03-21

218 reads

External Article

Moving on from Volunteer Projects

I can’t remember a time when I was not involved in side-projects, usually as a volunteer but also writing books or creating courses. New projects are like bright, shiny objects, and it’s easy to get involved in too many of them.

2020-03-16

SQLServerCentral Editorial

The New Year: A Chance to Start Over

January 1st is the beginning of a new year thanks to Julius Caesar and Pope Gregory XIII. This date is somewhat arbitrary, and many religions and cultures celebrate their own beginning of a new year at different times. Even though these celebrations don’t fall at the same time, I think the sentiment is similar. The […]

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2019-12-28

121 reads

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Create an HTML Report on the Status of SQL Server Agent Jobs

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We Should Demand Better

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Estimated Rows

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Estimated Rows

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Question of the Day

Estimated Rows

I have two calls to the GENERATE_SERIES TVF in this code:

SELECT   TOP 10 gs.value
FROM     GENERATE_SERIES(1, 10) AS gs
ORDER BY NEWID ()
OPTION (RECOMPILE);
go
DECLARE @a int = 10;
SELECT   TOP (@a) gs.value
FROM     GENERATE_SERIES(1, @a) AS gs
ORDER BY NEWID ()
OPTION (RECOMPILE);
In the actual query plans, what is the estimated number of rows for each batch?

See possible answers