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SQL Server 2014: ONLINE operation on a single partition of partitioned object

Here I continue a series of articles devoted to new options in SQL Server 2014. Today let's review another useful operation - ONLINE rebuilding some partitions of partitioned objects (tables or indexes).First let me remind you that some versions of SQL Server (Enterprise, Evaluation, Developer) allow you to perform a number of operations in ONLINE mode. The main advantage of this mode is that we can create / change index and keep on working with the data (including changing these data) at the same time.This happens due to the fact that schema lock (Sch-M) is not retained throughout creation / changing process. Here you can find a more complete list of options supported by different versions:

Forrards
March 30, 2023
SQL Server Enterprise Edition Advanced Scanning

It is widely known that SQL Server Enterprise Edition contains a range of improvements, which under certain conditions allow you to perform operations in a more optimal way in comparison with Standard Edition. One of these improvements is Advanced Scanning, which allows multiple scans to share one physical read from the disk. You can also come across another name of this feature - Merry-go-Round Scan.

Forrards
March 30, 2023
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Database consultancy: Writing to data files

It is a very popular database development task of loading data from the database to files directly. But how does it happen? Is it implemented immediately or the data is stored in memory first and transited to files later? Which event causes data transfer to transactions registration table and to files? Let’s see how it goes.

Forrards
March 31, 2023
Database consultancy: CROSS APPLY

This article is dedicated to the operator APPLY, and more specifically its type CROSS APPLY. This statement was first introduced in SQL Server 2005, but unfortunately many have not learned how to use it, maybe it's because of the fact that the BOL (SQL ServerBooksOnline) this operator is not well and has a very "dry" examples of its use. In this article, I'll show some interesting demonstrations, where the operator can come in handy.

Forrards
March 31, 2023

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