How do you compare two SQL tables? Every SQL Developer or DBA knows the answer, which is 'it depends'. It is not just the size of the table or the type of data in it but what you want to achieve. Phil Factor sets about to cover the basics and point out some snags and advantages to the various techniques.
2014-06-10
5,867 reads
This metric measures the total number of ad hoc queries in the plan cache that have only run one time. The value is only accurate for the instant the query is run, and the value can change radically from one capture time to the next.
2014-06-10
2,042 reads
Phi Factor on how to combine PowerShell Remoting with slick Windows tools such as SQLPSX, Boxstarter and Chocolatey, to automate the development process right through to delivery.
2014-06-09
95 reads
Statistics keep track of our data and will tell SQL Server how to make the best optimization decisions. Knowing how they work can make understanding query and performance problems much easier!
2014-06-09
5,661 reads
In this tip, we will demonstrate the installation of SQL Server 2014 on a notebook. While processing large amounts of data on a system like this might not be feasible, one can still learn how to configure and use the features of SQL Server 2014.
2014-06-09
3,879 reads
A simple problem that can become complex in T-SQL. How do you find the rows that match 2 conditions, but not a third, in an efficient manner. MVP Jeff Moden gives us a solution.
2014-06-06 (first published: 2012-03-29)
41,733 reads
Although many of the important tasks a DBA has to perform should be done 'by hand', keying in commands or using SSMS, the canny DBA with a heavy workload will always have an eye to automating routine tasks wherever possible, or using a tool.
2014-06-06
5,011 reads
Are all RDBMS heading towards "The Cloud"? Is this something we DBAs and consultants should be doing for our client?
2014-06-05
104 reads
You have been asked to deploy a brand new SQL Server instance. Your management asks you to come up with the best balance of availability, performance and cost for SQL Server. Richard Vantrease has some recommendations.
2014-06-05
4,676 reads
Tthe term DBA is too broad and we should strive to institute more granular terms.
2014-06-04
240 reads
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...
A conversation with Jan Laš, CIO at HOPI, about what deploying a data agent...
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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