Troubleshooting Failed PolyBase Installation in SQL Server 2017

This article shows you how to troubleshoot a failed installation of SQL Server and how to implement a workaround to allow SQL Server 2017’s PolyBase feature to be installed when version 9 of the Java Runtime Environment (JRE) is present. An installation of all features in SQL Server 2017 has three external dependencies. Python, R, … Read more

Still More SQL Server Features that Time Forgot

As the final entry in this series, Robert Sheldon leads you through a group of forgotten features that have been removed from recent versions of SQL Server. In some cases, the features were widely used and often loved, while others had lost their usefulness over the years or were replaced with something much better. In this article, he remembers Data Transformation Services (DTS), a handful of DBCC commands, a few utilities, Active Directory Helper Service, English Query, Web Assistant, SQL Mail, Native XML Web Services, Notification Services, SQL Distributed Management Objects, Surface Area Configuration Tool, and the Pubs and Northwind databases.… Read more

Summarizing Data Using the GROUPING SETS Operator

Writing aggregate queries is one of the most important tasks for anyone working with T-SQL. Determining the expressions required in the GROUP BY clause is not that difficult, but what do you do if you need to include different combinations of group by expressions in the same result set? Alfonso demonstrates how to use the GROUPING SETS operator to accomplish this task.… Read more

Checking SQL Server with Policy-Based Management

Policy-Based Management, a feature of SQL Server, is a flexible tool that can help DBAs manage one or more SQL Server instances. It's used for monitoring and enforcing a standard set of policies for SQL Server throughout an organization. While there are many built-in conditions from which to choose, Dennes demonstrates how to set up a custom policy as well as a standard one. Viewing the policy status over many servers can be tedious, so he also explains how DBAs can evaluate the states of multiple servers with just one glance.… Read more

SQL Server R Services: Working with Multiple Data Sets

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Although it is easy to use SQL Server R Services to create R scripts that incorporate SQL Server data by passing in a T-SQL query as an argument when calling the sp_execute_external_script stored procedure, you are limited to that one query, unless you pass additional data directly between R and SQL Server via CSV files. It is simple to do, and opens up many additional opportunities for data analysis. Robert Sheldon explains how.… Read more

Importing JSON Data from Web Services and Applications into SQL Server

To support many applications, it makes sense for the database to work with JSON data, because it is the built-in way for a JavaScript or TypeScript application to represent object data. It can mean less network traffic, looser coupling, and less need for the application developer to require full access to the base tables of the database. However, it means that the database must do plenty of checks first before importing. Phil Factor explains how it can be easily done.… Read more

Questions About Amazon Data Migration Service (AWS DMS) That You Were Too Shy to Ask

Can you imagine it? You are in a group of smart database people, and they are debating the finer points about AWS DMS, and you don't even know what the letters stand for. You just feel too shy to ask those basic questions that seem ridiculous once you're up to speed. Laerte Junior answers all the questions you need answers for when facing the prospect of getting familiar with Amazon's useful Database Migration Servic… Read more

Even More SQL Server Features that Time Forgot

SQL Server works well, and Microsoft does everything it can to keep it relevant and competitive: As with everything in real life, it doesn't don't always get it completely right, and Rob Sheldon continues his quest through the jungle of past features to rediscover and explore the ones that time forgot. Here, he comes across Lightweight Pooling, XML Indexes, Stretch Databases, SQL Variants, Transaction Savepoints and In-Memory OLTP.… Read more

Overcoming the Challenges of Microservices and Docker Containerisation

A microservice architecture can provide great benefits to certain types of applications that have pronounced troughs and peaks in demand, such as web-based shopping apps. With containerization, there is the promise of deploying containerized services in a matter of seconds to deal with demand. Has the Docker ecosystem now reached the level of maturity to allow this type of application to become standard practice?… Read more

The Quick and the Dead Slow: Importing CSV Files into Azure Data Warehouse

Although Azure Data Warehouse is part of the bright new jewellery of the Microsoft Data Platform, the old Data Warehouse rules still apply where data imports are concerned. When it comes to data import, it pays to choose the fastest import method first and prepare your data first to ensure that it is compatible with your choice. The subtlety is in the details, as Feodor explains.… Read more

Questions About RDS SQL Server That You Were Too Shy to Ask

There are a number of different ways that you can host SQL Server. RDS SQL Server, for example, uses SQL Server within AWS as a simple database service, much like a more versatile alternative to MySQL. Obviously, it is a compromise, in that you lose many of the extras beyond the database. Laerte Junior answers those questions about RDS that people seem to assume you know the answers to, but which you may be too shy to ask.… Read more

Consuming hierarchical JSON documents in SQL Server using OpenJSON

Over the years, Phil was struck by the problems of reading and writing JSON documents with SQL Server, and wrote several articles on ways of overcoming these problems. Now that SQL Server 2016 onwards has good JSON support, he thought that the articles would be forgotten. Not so, they continue to be popular, so he felt obliged to write about how you can use SQL Server's JSON support to speed the process up.… Read more