TSQL Challenge 45 - Evaluate mathematical expressions presented using
This challenge involves evaluating mathematical expressions presented using Roman Numerals and return the result of each expression.
This challenge involves evaluating mathematical expressions presented using Roman Numerals and return the result of each expression.
Of the big four DML statements in SQL Server, the DELETE is the one least written about. This is odd considering the extra power conferred on the statement by the addition of the WITH common_table_expression; and the OUTPUT clause that essentially allows you to move data from one table to another in one statement.
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Three contests from Red Gate Software are coming next week. Get a hint about what might be coming and set a reminder on your calendar.
One piece of advice that is often given to new SQL Server administrators is not to shrink their databases. But they seem to do it often enough anyway. For this Friday's poll, Steve Jones asks if we should do away with shrink.
Cross-posted from a Goal Keeping DBA blog:
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Data warehousing and general reporting applications tend to be CPU intensive because they need to read and process a large number of rows. To facilitate quick data processing for queries that touch a large amount of data, Microsoft SQL Server exploits the power of multiple logical processors to provide parallel query processing operations such as parallel scans. Through extensive testing, we have learned that, for most large queries that are executed in a parallel fashion, SQL Server can deliver linear or nearly linear response time speedup as the number of logical processors increases. However, some queries in high parallelism scenarios perform suboptimally. There are also some parallelism issues that can occur in a multi-user parallel query workload. This white paper describes parallel performance problems you might encounter when you run such queries and workloads, and it explains why these issues occur. In addition, it presents how data warehouse developers can detect these issues, and how they can work around them or mitigate them.
Microsoft is working to certify vendors to build private clouds, which Steve Jones thinks is a great idea.
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When Azure SQL Database was originally released, the MAXDOP was set to 0 for each new database. In Oct 2025, what is the default value for Azure SQL databases?
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