UNION ALL Optimization
Paul White digs into row goals as he explains some interesting and inconsistent behavior with UNION ALL queries in SQL Server.
Guilty of Over-Customising
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The Value of Surveys
Phil Factor on the perils of trying to squeeze good insights out of bad surveys.
Two Approaches to Addressing Circular References in SSDT
Both options have their advantages and disadvantages. Neither is universally right for all situations. Understand the differences before picking the model that works for your situation.
Guide to enhancing privacy and addressing GDPR requirements with the Microsoft SQL platform
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Scala and Apache Spark in Tandem as a Next-Generation ETL Framework
Scala and Apache Spark might seem an unlikely medium for implementing an ETL process, but there are reasons for considering it as an alternative. After all, many Big Data solutions are ideally suited to the preparation of data for input into a relational database, and Scala is a well thought-out and expressive language. Krzysztof Stanaszek describes some of the advantages and disadvantages of a scala-based approach to implementing and testing an ETL solution.
Understanding OPENJSON and FOR JSON in Azure and SQL 2016
An example of exporting and importing table data with JSON in Azure and SQL Server 2016.
Statistics in SQL: Pearson’s Correlation
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SQL Server is Getting Smarter
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How to partition data in Tabular SSAS
Partitioning data is a standard SQL Server administration practice. Partitions enable independent administration of different slices of data. When a SQL Server Analysis Services (SSAS) tabular data model is developed and processed, data is read from the source system and loaded into the tabular data model configured in In-Memory processing mode. Every time the model is processed, the entire data set may not require re-processing. Only certain slices of data containing changes may require re-processing which can be achieved by partitioning data into logical slices. In this post, Siddharth Mehta looks at how to partition tables in Tabular SSAS.
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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