A Hazard of Using the SQL Merge Statement
The SQL MERGE statement can make your DML querying more efficient but you need to take care or you may get burned
2013-04-03
24,593 reads
Articles
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2013-04-03 (first published: 2013-03-14)
7,069 reads
Join Reordering and Bushy Plans
Normally, the query Optimiser won't consider 'bushy' plans, where both operands to a join operator could be intermediate results from other joins. This means that it won't produce good query plans for some types of query. Hints, by themselves won't do it. More powerful magic is required.
2013-04-03
3,486 reads
Low Profile Architecture
The goal of this article to show how to get unique transactions per client per month from the data set containing multiple transactions per client per month.
2013-04-02
4,016 reads
SQL Saturday #203 - Boston
Join us at SQL Saturday Boston on April 6th. SQL Saturday is a free training event for SQL Server Professionals and those wanting to learn more about SQL Server.
2013-04-02
303 reads
Blocking SQL Server db_datareader, db_datawriter, and db_owner Permissions
n a database I currently support, the application makes use of db_datareader and db_datawriter to give permissions to the tables. In a different database, it's even worse as the application uses db_owner. We're adding new tables to both databases and we don't want the application to have access to these tables. How can I deal with the use of these three roles?
2013-04-02
3,632 reads
Throttle a Query in Mid-Execution
Resource Governor provides a great mechanism for throttling resources, but it doesn't always allow granular control. Read about this trace flag that allows you to dynamically alter the resource usage of a query.
2013-04-01
6,515 reads
Mo-SQL
If you’re involved in the database world it’s hard to have missed the rise of the “no-sql” database products, designed to – depending on your view or the product I suppose – make databases simpler, break out of the transaction database paradigm, scale out across hundreds of machines, make it easy to change the db design (or not require one). I think some of the problems no-sql tries to solve are real, others reflect a lack of awareness/training/tools on how and why relational databases could not just solve the problem, but solve it better.
2013-04-01
3,528 reads
TSQL Pivot Rotations using only REPLACE
Pivoting SQL Server tables is always awkward, even with the PIVOT and UNPIVOT operators. If you want to get the job done without GROUP BY or PIVOT, here is a way to do it using only REPLACE.
2013-04-01
6,173 reads
SQL Saturday #197 - Omaha
Join us on April 6th in Omaha for SQL Saturday #197. SQLSaturday is a training event for SQL Server professionals and those wanting to learn about SQL Server.
2013-03-29
228 reads
Blogs
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Forums
SQL Password enforcing
Hi to all We have situation at a client where someone is illegally changing...
SQL Password enforcing
Hi to all We have situation at a client where someone is illegally changing...
How do I explain that SQL Server should not be used as a code repository?
This week my BI Developer colleague proudly showed me a new Power BI report...
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