In this Article , We will delve into the world of Query Store and explore how to use Optimized Plan Forcing to improve performance in SQL Server 2022. We will discuss what it is, how it works, and how it can impact your system's performance.
2023-09-04
5,435 reads
In this tip we will go through each type of index that is available in SQL Server and give an overview as well as advice on which index types fit each particular use case.
2020-01-21
As SQL developers, we tend to think of performance tuning in terms of crafting the best table indices, avoiding scalar and table valued functions, and analyzing query plans (among other things). But sometimes going back to the spec and applying some properties of elementary math can be the best way to begin to improve performance of SQL queries which implement mathematical formulas. This article is a case study of how I used this technique to optimize my SQL implementation of the Inverse Simpson Index.
2021-05-07 (first published: 2019-09-12)
5,402 reads
Sometimes, simply switching the order of columns in an index means SQL Server takes more fine-grained locks, for a shorter period of time, causing less blocking.
2019-05-31
No matter what you use to collect or display them, deadlock graphs can return some confusing information.
2019-05-31
Even if your scalar function doesn’t touch tables, it still cripples performance by forcing serial processing, blowing up your CPUs, and obfuscating your query plans. Scalar user-defined functions: not even once.
2019-05-31
Erik Darling explains a trick that has a specific use case, but can be quite effective when you spot it.
2019-05-31
This post provides new information about the preconditions for minimally logged bulk load when using INSERT...SELECT into indexed tables.
2019-05-31
If someone sends you a cached plan that’s slow, how can you tell if it’s because of parameter sniffing?
2019-05-31
Does index fragmentation hurt query performance? Possibly. It depends on your workload. Tibor Karaszi explains.
2019-05-31
By Steve Jones
This month we have a new host, Meagan Longoria, who graciously agreed to help...
By Steve Jones
I’m at the UK Redgate office today, meeting with senior leaders in all areas...
Optimizing Azure SQL Database performance often begins with identifying the most resource-intensive queries. Understanding...
Comments posted to this topic are about the item Creating a JSON Document IV
By VishnuGupthanSQLPowershellDBA
Comments posted to this topic are about the item Restoring Azure Key Vault Keys...
When the schema of an object is changed, SQL Server wipes out the previous...
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT YearEstablished, json_objectagg(city : TeamName) FROM dbo.NFLTeams GROUP BY YearEstablished;See possible answers