March 2018
Intermediate to advanced
816 pages
19h 35m
English
Content preview from SQL Server 2017 Developer???s Guide
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Queries With High Variation
In SSMS 17, the newly added Queries With High Variation report allows you to easily identify queries with parameterization problems. When a query has parameterization problems, there is a high variation in query execution. Sometimes the query runs well and very fast, sometimes the query will be very slow. Query Store keeps track of the standard deviation of query execution; due to the parameterization problem, the standard deviation will be high:
Queries With High Variation report
In productions systems, there are usually hundreds or thousands of stored procedures and parameterized queries. Use this view to identify ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.