Blogs

Estimated vs. Actual Number of Rows in Nested Loop Operators

Estimated vs. Actual Number of Rows in Nested Loop Operators

By Kendra Little on September 6, 2016 • 2 min read

This is one of those little details that confused me a ton when I was first working with execution plans.

One problem with learning to work with plans is that there’s just SO MUCH to look at. And it’s a bit spread out. So, even when looking at a single tooltip, things can be confusing.

Let’s talk about the nested loop operator, who can be particularly weird to understand.

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Finding Your Voice as a Speaker (Dear SQL DBA Episode 15)

Finding Your Voice as a Speaker (Dear SQL DBA Episode 15)

on September 1, 2016 • 4 min read

Learn what it’s like to find and develop your voice as a technical speaker in this week’s episode of Dear SQL DBA.

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Do Clustered Index Columns Count Against Max Nonclustered Key Size?

Do Clustered Index Columns Count Against Max Nonclustered Key Size?

By Kendra Little on August 30, 2016 • 6 min read

Category: indexing , sql-server

SQL Server 2016 and Azure SQL Database have a lot of little perks. One little thing that changed is that the maximum key size allowed for nonclustered indexes was raised from 900 bytes to 1700 bytes.

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Collect and Baseline Wait Statistics (Dear SQL DBA Episode 14)

Collect and Baseline Wait Statistics (Dear SQL DBA Episode 14)

By Kendra Little on August 25, 2016 • 6 min read

What are the best tools to collect and baseline wait statistics? Should you write your own? Watch the 18 minute video or read the episode transcript below.

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Free Poster: tempdb data files in SQL Server

Free Poster: tempdb data files in SQL Server

By Kendra Little on August 23, 2016 • 1 min read

Tags: tempdb , posters

The tempdb database is a strange place in SQL Server.

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Developer Seeks DBA Career (Dear SQL DBA, Episode 13)

Developer Seeks DBA Career (Dear SQL DBA, Episode 13)

By Kendra Little on August 18, 2016 • 7 min read

Category: career

A C# developer wants to be a DBA, but is having a hard time landing a job. Should they take a pay cut and go for a Junior level job? Or could there be another path?

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Does Adding NOINDEX Change DBCC CHECKDB with PHYSICAL_ONLY?

Does Adding NOINDEX Change DBCC CHECKDB with PHYSICAL_ONLY?

By Kendra Little on August 16, 2016 • 2 min read

Category: backup-recovery

The NOINDEX option does change the behavior of DBCC CHECKDB (even if you’re already using PHYSICAL_ONLY). Here’s how the two options compare to one another, and how to see the difference yourself in a simple example.

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