Blog Posts

Blog Post

Correlated Subqueries vs Derived Tables

Correlated subqueries provide an intuitive syntax for writing queries that return related data. However, they often perform poorly due to needing to execute once for every value they join on....

2019-05-07 (first published: )

1,721 reads

Blog Post

Temporary Staging Tables

Watch this week’s episode on YouTube. SQL Server Spool operators are a mixed bag. On one hand, they can negatively impact performance when writing data to disk in tempdb....

2019-05-07

239 reads

Blog Post

Temporary Staging Tables

Watch this week's video on YouTube
SQL Server Spool operators are a mixed bag. On one hand, they can negatively impact performance when writing data to disk in tempdb. On...

2019-05-07

7 reads

Blogs

The Book of Redgate: SQL Server Central

By

It was neat to stumble on this in the book, a piece by me,...

Git forked

By

Forgive me for the title. Mentally I’m 12. When I started my current day...

Setting FK Constraints in Data Modeler

By

One of the things a customer asked recently about Redgate Data Modeler was how...

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Forums

Expanding into Print

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Expanding into Print

Downtime Caused by the Postgres Transaction ID Wraparound Problem

By Chandan Shukla

Comments posted to this topic are about the item Downtime Caused by the Postgres...

The String Distance I

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The String Distance I

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Question of the Day

The String Distance I

In SQL Server 2025, what is returned by this code:

SELECT EDIT_DISTANCE('Steve', 'Stan')
Assume preview features are enabled.

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