No matter how well-designed and –build a business intelligence (BI) system is, it’s always possible that your workload will exceed its capabilities, and you’ll end up being dissatisfied with its performance. In those cases, what can you do? Your options depend a lot on the underlying database and analysis engine; for this article, we’ll assume … Continue reading Using SQL Server Analysis Services for poorly-performing BI Systems
Tag Archives: SQL 2008
How to Use Values from Previous or Next Rows in a SQL Server Query
I recently came across a problem that required having to perform a calculation in a query that involved a value in the current row and a value in the previous row. The problem is that SQL queries perform operations on a row-by-row basis; accessing data on different rows at the same time requires the query … Continue reading How to Use Values from Previous or Next Rows in a SQL Server Query
Working with Validation in SSIS
SSIS validates packages to ensure that they will execute properly. SQL Server Validation occurs both as a package is opened in the BIDS design environment (Design-Time Validation) and just before the package executes (Run-Time Validation). Validation is very useful because it can help find errors in a package, usually with its connections, before it gets … Continue reading Working with Validation in SSIS
