Accurate statistics about the data held in tables are used to provide the best execution strategy for SQL queries. but if the statistics don't accurately reflect the current contents of the table you'll get a poorly-performing query. How do you find out if statistics are correct, and what can you do if the automatic update of statistics isn't right for the way a table is used?
2013-04-15
6,631 reads
dbWarden is a comprehensive monitoring and alerting solution for SQL Server 2005 or newer. It features an emailed Health Report and includes email and text notifications with customizable metrics for alerts such as Blocking, Long Running Queries and SQL Jobs, CPU %, Log file and TempDB growth.
2013-04-12
25,618 reads
The performance of 'extract, transform, load' (ETL) processes for large quantities of data can always be improved by objective testing and experiment with alternative techniques. The cause of poor performance can sometimes be surprising.
2013-04-12
4,801 reads
SQL Server Management Studio is where most SQL scripts and queries are run, and although it does a decent job, it doesn't provide much help storing, sharing and managing the scripts particularly in the context of a team. Red Gate is considering building functionality into SSMS to help its users consume and share queries and scripts. Please help us by completing this short survey to help us define the requirements.
2013-04-12
3,832 reads
SQL Server 2008 has hundreds of new features and improvements for Production DBAs, Developer DBAs, and Business Intelligence specialists…in this book I focus on what I thought were the ten most important new features for Production DBAs.
2013-04-11
14,335 reads
There can be more to managing a SQL Server instance than just examining the performance metrics. There are times when understanding how your system is performing for the application is important.
2013-04-11
1,442 reads
The concept of a sliding window scenario is to manage and keep the same number of partitions on a partitioned table over time. Learn how in this step-by-step from Arshad Ali.
2013-04-11
2,684 reads
Overview of 2 very important clauses added to SELECT statement in SQL2012 to allow paging on result sets.
2013-04-10
658 reads
2013-04-10
10,663 reads
We need to exclude SQL Server database files from Antivirus and Third Party Backup Software (to make sure that files are not accessed directly). How can we be sure that all of our SQL Server file extensions are using the standard file extensions for database files?
2013-04-10
2,438 reads
It's time for T-SQL Tuesday #198! This month's topic is change detection. The post T-SQL...
By James Serra
Model Context Protocol, or MCP, is one of those technical ideas that sounds more...
When starting with AWS RDS Aurora for managing relational databases in the cloud, many...
Hi to all We have situation at a client where someone is illegally changing...
Hi to all We have situation at a client where someone is illegally changing...
This week my BI Developer colleague proudly showed me a new Power BI report...
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