SQL Server tech interview questions must be well crafted to make sure the candidate actually knows the topic. In this article, Sergey Gigoyan provides his favorite questions for interviewing SQL Server developers.
This article is focused on beginners who have already started writing SQL queries and are now diving deep towards more data processing and complex queries in SQL. When we talk about data processing, an important concept that comes to our mind is performing ETL workloads to a data warehouse. ETL is a very complex topic […]
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Learn how to create charts and graphs with R and how you can use R code in SSMS to generate and save graphs to an external file.
One of your SQL Server instance shows a major dip in performance or throughput, affecting all the user databases. You notice that the slow interludes coincide, as if orchestrated. On investigation, it appears that several transactions running over that period were using a lot of space in tempdb. However, which of them, if any, are causing the tempdb bottleneck, and why?
Many people don't feel like they can make changes in their work environment. Today Steve notes this is common in many organizations.
When it comes to developing a Power BI report, we can use it for accessing data, transforming the data, and turning the data into information using visuals. With no doubt Power BI can do the job from beginning to end. Now, this is not the only, nor necessarily the best, tool for all the steps […]
When inserting rows into a heap, SQL Server must sometimes update the PFS page which can PFS contention and affect performance. In this article, Uwe Ricken demonstrates how to measure PFS contention.
In this tutorial we will cover common questions related to the SQL Server msdb database. This is one of the standard system databases that are part of every SQL Server installation.
Changes in data privacy law in California are demanded by consumers.
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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