Locking, Blocking and Deadlocking
Introduction into Locking, Blocking and Deadlocks in SQL Server, and why SQL Server uses these actions.
2013-11-18
11,221 reads
Articles
SQL in the City Seminar Washington DC 2013 –Deployment Stairway
Join Red Gate for a free seminar on December 6 (the day before SQL Saturday Washington DC). Steve Jones and Grant Fritchey, SQL Server MVPs, will present best practices for SQL Server version control, continuous integration and deployment, in addition to showing Red Gate tools in action.
2013-11-18
2,029 reads
Windows Azure SQL Database (WASD) Primer
Are you a SQL Server DBA who is now being asked to migrate databases to Windows Azure SQL Database (WASD)? Are you a developer who is writing code for a cloud service that shall use SQL Database as the back-end? This blog post is based on issues encountered while supporting customers that were once in your shoes and the lessons learned in the process.
2013-11-18
3,173 reads
Using Indexes to Reduce Blocking in Concurrent Transactions
New author Nilav Ghosh brings us a performance tuning article to help your queries run better. This article examines how indexes can help reduce blocking.
2013-11-15 (first published: 2009-07-07)
22,335 reads
Explanation of SQL Server IO and Latches
This article is a whistle-stop tour of my exploration of latches; their different types, their purposes, why they are required and where they fit into the SQL database engine, in the hope it will be interesting and useful to you.
2013-11-15
4,623 reads
What is your default database set to?
Some people set their default database to the database they use most often. This can cause issues when a restore fails.
2013-11-14
7,507 reads
Window Functions in SQL
SQL's windowing functions are surprisingly versatile, and allow us to cut out all those self-joins and explicit cursors. Joe Celko explains how they are used, and shows a few tricks such as calculating deltas in a time series, and filling in gaps.
2013-11-14
7,422 reads
Overview of the Different In-Memory OLTP Index Types
In-Memory table or what Microsoft refers to as In-Memory OLTP, or Hekaton is a new type of table is available with SQL Server 2014. In this article Greg Larsen discusses the different types of indexes you can place on your In-Memory tables, and how those indexes support different search criteria.
2013-11-13
2,920 reads
SQL in the City Seminar Portland 2013 –Deployment Stairway
Join Red Gate for a free seminar on November 15 (the day before SQL Saturday Oregon). Steve Jones and Grant Fritchey, SQL Server MVPs, will present best practices for SQL Server version control, continuous integration and deployment, in addition to showing Red Gate tools in action.
2013-11-12 (first published: 2013-10-31)
3,118 reads
Using the SQL Server Distributed Replay feature
This tip will guide you through a simple example to illustrate how you can use the SQL Server Distributed Replay feature to replay a simple SQL Server trace file that contained two sessions executing statements concurrently.
2013-11-12
1,971 reads
Blogs
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T-SQL Tuesday #198 Invitation: How Do You Detect Data Changes?
It's time for T-SQL Tuesday #198! This month's topic is change detection. The post T-SQL...
Forums
SPAM Issues May 2026
We suffered a SPAM attack from May 1-6, which unfortunately corresponded with time off...
SQL Password enforcing
Hi to all We have situation at a client where someone is illegally changing...
SQL Password enforcing
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Question of the Day
Creating a JSON Document III
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT TOP 2
json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;
See possible answers