Cartesian Products usually don't provide useful information and often result in mistakes that can hurt your database developer career. Learn to spot Cartesian Joins and banish them from your SELECT queries forever.
2010-09-10
4,388 reads
SQL Saturday Columbia, SC gives you a chance to get a full day of free SQL Server information, lectures, and seminars from the experts on the East Coast.
2010-09-10
1,014 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
7,836 reads
Find out in this webinar how easy it is with Red Gate's SQL Virtual Restore to mount live, fully functional databases direct from backups – without performing a physical restore. Learn how you can use SQL Virtual Restore to save storage space and time across a wide range of database administration activities.
2010-09-09
1,093 reads
There are a number of ways to issues CTIs (Current Time Increments) into your StreamInsight streams but a quite useful way is to do it declaratively on your source factory like this
2010-09-09
1,492 reads
A review on the basic steps to correct a poorly performing query
2010-09-08
12,482 reads
You can easily re-factor bad DML code, but if a database design is wrong, you can do little to rescue the problem, even with expert queries. So what constitutes 'wrong RDBMS design? What are these errors that continually crop up? How can you recognise them and fix them? Joe embarks on a new series of articles by identifying a series of bad practices based on the habit of 'splitting' that which shouldn't be split.
2010-09-08
2,767 reads
Hope you got plenty of rest over your Labor Day holiday because the PASS Virtual Chapters have some great free training lined up for you.
2010-09-07
1,108 reads
Part one of a four-part series exploring the internals of query optimization from T-SQL guru, Paul White.
2010-09-07
12,888 reads
We use Internet Protocol Security (IPSec) within the trusted domains, but use the Negotiate Security Support Provider for our web applications. What other security methods can we employ with SQL Server?
2010-09-07
2,304 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