Index Seeks, Scans, and Lookups
This script may help identify tables impacted by frequently-occurring scans.
2010-11-02 (first published: 2010-02-04)
3,887 reads
Indexing
2010-01-19
4,042 reads
Database Indexing Development Lifecycle...Say What?
Creating good indexes on your database doesn't happen by mistake--you need to have a plan. Greg Larsen shows you how, beginning with a discussion on the indexing development lifecycle.
2010-01-15
3,807 reads
Data searches that leverage existing indexes
Recent installments of our SQL Server 2005 Express Edition series have been discussing its implementation of Full Text Indexing. This article focuses on data searches, which leverage existing indexes, taking into account such features as noise words and thesaurus files.
2010-01-07
2,426 reads
Top 10 steps to optimize data access in SQL Server. Part I (Use Indexing)
’ll focus on the issues that you need to follow to make sure that you have done everything that you could do to optimize the data access codes you have written or you are going to write in future. The Database Administrators (DBA) also has great roles to play in optimizing and tuning the database performance. But, optimization scopes that fall into a DBA’s area are out of scope for these articles.
2009-12-29
5,922 reads
2009-12-09
3,386 reads
Introduction to Indexes: Part 3 – The nonclustered index
Part 3 of a great series on the basics of indexes. Learn the structure, definition, and how to examine the use of these indexes in your queries.
2012-07-23 (first published: 2009-11-18)
53,394 reads
Introduction to Indexes: Part 2 – The clustered index
In the second part of her series on indexing, MVP Gail Shaw examines clustered indexes. Learn what this index is, how it differs from a heap, and how it can help your queries.
2012-07-06 (first published: 2009-11-11)
63,320 reads
Introduction to Indexes
Indexes are critical to good performance. However many people don't understand how indexes well. MVP Gail Shaw provides us with an introductory article on the basics of indexing.
2019-05-30 (first published: 2009-10-26)
104,217 reads
Index Management
This article demonstrates an Index Management strategy to tackle day to day performance issues due to improper indexes.
2011-06-10 (first published: 2009-10-20)
25,441 reads
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Question of the Day
Fun with JSON I
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t; See possible answers