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Learn T-SQL Querying
book

Learn T-SQL Querying

by Pedro Lopes, Pam Lahoud
May 2019
Intermediate to advanced content levelIntermediate to advanced
484 pages
11h 23m
English
Packt Publishing
Content preview from Learn T-SQL Querying

Using Live Query Statistics

To meet the need to analyze a query execution plan while the query is executing, Live Query Statistics (LQS) was introduced with the SQL Server 2016 release of SSMS, adding rich visuals by animating the in-flight execution plan to allow more immediate and precise identification of hot spots in a plan during query execution.

To see LQS in action, open a new query window in SSMS, in which we can use the following example query from Chapter 3, Mechanics of the Query Optimizer. This is a previously identified long-running query that I'm tasked to troubleshoot and tune:

SELECT e.[BusinessEntityID], p.[Title], p.[FirstName],p.[MiddleName],       p.[LastName], p.[Suffix], e.[JobTitle], pp.[PhoneNumber], pnt.[Name] AS [PhoneNumberType], ...
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Publisher Resources

ISBN: 9781789348811Supplemental Content