An Introduction to Database Design
An introduction to database design for those people that might not understand what is involved.
2013-01-11 (first published: 2011-01-18)
28,209 reads
An introduction to database design for those people that might not understand what is involved.
2013-01-11 (first published: 2011-01-18)
28,209 reads
The second of a series by Paul White examining the APPLY operator. In this section learn how this operator compares with joins and about both the cross and outer options.
2012-01-13 (first published: 2010-04-19)
29,468 reads
The first of a two-part series of articles examining the APPLY operator. Learn the basics of how this operator works and how it can help you solve some tricky problems.
2012-01-06 (first published: 2010-04-12)
52,505 reads
The final part in a series by Paul White exploring the internals of query optimization. Learn how
2010-09-16
5,600 reads
Join Paul White in part three of a four-part series exploring the internals of query optimization as he looks at the rules that are used to build the execution plan.
2010-09-14
6,483 reads
How does the query optimizer build an execution plan for your queries? Paul White shows is in part two of a four-part series exploring the internals of query optimization.
2010-09-09
7,849 reads
Part one of a four-part series exploring the internals of query optimization from T-SQL guru, Paul White.
2010-09-07
12,900 reads
The second part of this series compares four methods of obtaining the total number of rows in a paged data set.
2010-05-24
19,119 reads
This article by Paul White presents an optimisation for paging through a wide data set.
2010-04-26
27,908 reads
By Steve Jones
I recently started playing with the MCP Server for SQL Server, which is a...
If you spend your days tuning queries, managing pipelines, or keeping a production database...
I’ve been rebuilding my three-site SQL Server demo lab, and I ran into something...
Has anyone written a wrapper function (or similar) around STRING_AGG() to allow the retrieval...
Putting this here as we're currently on SQL Server 2019 installed on Windows Server...
Comments posted to this topic are about the item Never is Not the Policy
I have added a few indexes to one of my tables in SQL Server 2025:
ALTER TABLE dbo.CustomerContact
ADD CONSTRAINT PK_CustomerContact
PRIMARY KEY (CustomerID);
-- Create index on CustomerEmail
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (CustomerEmail);
CREATE INDEX IX_CustomerContact_CustomerPhone
ON dbo.CustomerContact (phone);
I then do this to disable one index:
alter index IX_CustomerContact_CustomerPhone on dbo.CustomerContact disableI see this when I check the index status:
I decide to rebuild all indexes with this command:
ALTER INDEX ALL ON dbo.CustomerContact rebuildAfter I do this, what will I see for the index status? See possible answers