David Durant


Stairway to SQL Server Indexes

Deeper into Nonclustered Indexes: Stairway to SQL Server Indexes Level 2

By this stage, you should be familiar with the basics of SQL Server indexes. We've discussed what an Index actually is, as well as some of the most common types you're likely to encounter. Now that we've seen some simple examples of how Indexes can be useful, we're going to delve deeper into nonclustered indexes, as we'll see how they can improve the performance of more complex queries.

5 (3)

You rated this post out of 5. Change rating

2022-11-16 (first published: )

37,559 reads

Stairway to SQL Server Indexes

An Introduction to SQL Server Indexes: Stairway to SQL Server Indexes Level 1

Indexes are the database objects that enable SQL Server to satisfy each data access request from a client application with the minimum amount of effort, resulting in the maximum performance of individual requests while also reducing the impact of one request upon another. Prerequisites: Familiarity with the following relational database concepts: Table, row, primary key, foreign key

5 (1)

You rated this post out of 5. Change rating

2019-03-29 (first published: )

66,635 reads

Stairway to SQL Server Indexes

Pages and Extents: Stairway to SQL Server Indexes Level 4

We've now seen how indexed and non-indexed tables perform in queries, and established "logical reads" as the metric for query performance. Now it is time to explain why logical reads are an excellent metric and also explain what is actually being read.

5 (2)

You rated this post out of 5. Change rating

2019-03-29 (first published: )

18,929 reads

Blogs

T-SQL Tuesday #180: Good enough is perfect Roundup

By

This month, I prompted bloggers to discuss whether good enough is perfect. Thank you to all...

Using SQL Compare with Read-only Access

By

Recently a customer asked if SQL Compare and SQL Data Compare can be used...

Off to Live 360

By

I am off to Live 360 today, on my last trip of the year....

Read the latest Blogs

Forums

how can i tell if our db2 driver is ms or ibm or other?

By stan

i see this in the definition of a linked server on our wh sql...

normal role member to be able to view list of other role members in his DB

By Senad

Is this even possible ? Tried with grant but to no avail. [sys].[database_role_members] and...

Stairway to Snowflake Level 5 - Using Snowflake with SnowSQL and Visual Studio Code

By Mike McQuillan

Comments posted to this topic are about the item Stairway to Snowflake Level 5...

Visit the forum

Question of the Day

A Strange Result

What does this code return in SSMS 20 from SQL Server 2019?

select '|' + CHAR(0)+'abc' + '|';

See possible answers