Clustered Vs Non-Clustered Index

The difference between the index clustered et Non-clustered in a database is one of the most popular questions in SQL.

Indexes are a very important concept, it makes the execution of your queries fast and if you compare a query SELECT which uses a column indexed to the one that does not, you will see a big difference in performance.

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Run an SSRS subscription with SSIS

A quick post to see how to launch an SSRS subscription from SSIS.

It can serve as in my case for example to email a report on the execution status of an SSIS package. Of course after inserting the logs of this package in a table, create a report of return of these logs and a subscription that sends the report by mail.

So how?

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Useful SQL queries

In this article I will explain some general queries. I think every developer should know about these queries. These queries are not related to a specific topic of SQL. But knowledge of such queries can solve some complex tasks and can be used in many scenarios, so I decided to write an article about these queries.

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What is fragmentation?

What is fragmentation? How to detect fragmentation and how to eliminate it?

A fragmented table is a table where some of its data pages point to pages that are not immediately following pages in the extent, and all pages are contiguous in both the allocation plan and the extents , then the table is not fragmented.

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