It comes as rather a shock to find out that one of the commonest circumstances in an OLTP database, an ascending primary key with most querying on the latest records, can throw the judgement of the Query Optimiser to the extent that perfomance nose-dives. Fabiano Amorim once again dons snorkel and goggles to explore the murky depths of execution plans to find out why.
2011-09-16
2,528 reads
2011-09-15
11,687 reads
2011-09-15 (first published: 2009-10-07)
8,038 reads
There are numerous circumstances when we wish to add a custom function to a SSRS report in order to cater for needs of the customer which exceeds the capability of the built-in functions in SSRS. In these scenarios we will have to write our own functions. In this article you will see how to add custom code to SSRS.
2011-09-15
3,644 reads
On Thursday September 15th, MCM Robert Davis will discuss the architect jobs and their meanings.
2011-09-15
2,899 reads
We are pleased to announce that Jeff Moden has been elected by judges and the SQL Server community as the Exceptional DBA of 2011.
2011-09-14
1,300 reads
Come join Steve Jones and many other SQL Server pros in Liverpool for SQLBits on Sept 29-Oct 1.
2011-09-14
1,372 reads
Are your index statistics up to date? The SQL Server database engine uses statistics to determine which execution plan to use when a query is compiled. Index statistics are used to help the SQL Server engine determine the cardinality of different column values in a SQL Server table. If you want to give SQL Server a fighting chance at picking an optimal execution plan then you need to make sure you maintain your index statistics.
2011-09-14
3,901 reads
Managing Data removal During ETL. First of Comprehensive tools designed for ease of use especially in enterprise Projects.
2011-09-13
4,473 reads
2011-09-13 (first published: 2009-09-30)
8,063 reads
By Vinay Thakur
These days everything is changing to AI World, IT roles are getting changed and...
PlanTrace: Stop Reading Redshift EXPLAIN Plans. Start Seeing Them Introducing PlanTrace — a free, browser-based...
By Steve Jones
I went to sleep while reading a Kindle book on my phone. I know...
We suffered a SPAM attack from May 1-6, which unfortunately corresponded with time off...
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...
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