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April 21, 2018

Monitor real-time query progress using sys.dm_exec_query_profiles DMV
by BF (Principal Consultant; Architecture; Engineering)
Use this DMV to determine which part of the query is running slow.
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Tags QueryTuning
November 8, 2017

T-SQL - Check Statistics Last Updated and Update All Statistics
by BF (Principal Consultant; Architecture; Engineering)
sys.stats, sys.stats_columns, sys.columns, sys.partitions, sys.objects
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Tags QueryTuning
November 8, 2017

T-SQL - Find Missing Indexes - incl. Improvement Measure and Avg User Impact
by BF (Principal Consultant; Architecture; Engineering)
sys.dm_db_missing_index_group, sys.dm_db_missing_index_group_stats, sys.dm_db_missing_index_details
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Tags QueryTuning
April 11, 2017

T-SQL - Constants vs Parameters vs Local Variables - Execution Plans, Statistics, Assumptions
by BF (Principal Consultant; Architecture; Engineering)
Procedure Cache, Parameter Sniffing, SSMS Compare Execution Plans Tool, SSMS Live Execution Plan Tool
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Tags QueryTuning
May 15, 2016

Procedure Cache Analysis Queries
by BF (Principal Consultant; Architecture; Engineering)
sys.procedures, sys.dm_exec_procedure_stats, sys.dm_exec_cached_plans
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Tags QueryTuning
May 6, 2016

SQL Server Execution Plan Handle Changes - Monitoring, Logging & Alerting
by BF (Principal Consultant; Architecture; Engineering)
Alert if Plan_Handle changes
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Tags QueryTuning
February 5, 2016

T-SQL Query Tuning - Statistics, Histogram, Density, Selectivity & Cardinality
by BF (Principal Consultant; Architecture; Engineering)
DBCC Show_Statistics, Set Statistics Profile, Set Statistics IO, Set Statistics Time, sp_updatestats, DBCC dropcleanbuffers, DBCC freeproccache
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Tags QueryTuning
January 20, 2016

How to Identify Performance Issues on Azure SQL Database
by BF (Principal Consultant; Architecture; Engineering)
Azure SQL Database (as-a-service), DMVs
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Tags QueryTuning
November 1, 2015

Microsoft SQL Server Query Testing Tool
by BF (Principal Consultant; Architecture; Engineering)
SQLQueryStress by http://www.datamanipulation.net/
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Tags QueryTuning
August 2, 2015

Java(Prepare-Execution Model) View call performance issue solved by SQL Server Plan Guides
by BF (Principal Consultant; Architecture; Engineering)
Parameter Sniffing lead to poor SQL Server Execution Plan
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Tags QueryTuning
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