SQL Server Education (by the geeks, for the geeks)
Hi Geeks, In my previous blog post we saw how parameter sniffing could negatively impact any query performance when SQL Server query optimizer decides to sniff parameters. There are different ways that …
SQL Server optimize for unknown and local variables Read MoreHi Friends, SQL Server uses histograms from statistics objects to estimate cardinality of a query and this helps SQL Server to produce an optimal execution plan. Query optimizer has to inspect …
Parameter sniffing in SQL Server Read MoreHi Geeks, Many of us might have experienced that a query runs perfect for long time then suddenly it started performing very bad with no clues. After lot of investigation, we …
OPTIMIZE FOR query hint in SQL Server Read MoreHi Geeks, Think of a situation when you want to apply query hint to a query that is part of application code but development team is unwilling to touch application code. …
SQL Server plan guide and execution plan Read MoreHi Geeks, Today I will be talking about SQL Server expand views hint and its impact on execution plan. We will create an indexed view first then dive into the topic. –USE …
SQL Server expand views hint and execution plan Read MoreHi Geeks, Welcome to the Part3 of SQL Server query hints execution plan. You can read last two posts by clicking Part1 and Part2. Today we are going to see how …
SQL Server query hints execution plan – Part3 Read MoreHi Friends, Welcome to the Part2 of SQL Server query hints execution plan and you can read Part1 by clicking here. Let us start with a simple query. In the example below …
SQL Server query hints execution plan – Part2 Read MoreHi Friends, Today we are going to discuss on SQL Server query hints execution plan. Let us consider following SQL statement; USE [AdventureWorks2012] SELECT * FROM Sales.SalesOrderDetail ORDER BY SalesOrderDetail.ProductID Imagine …
SQL Server query hints execution plan – Part1 Read MoreHi Geeks, Today we are going to explore SQL Server table hints execution plan operation. Consider following SQL query. USE [AdventureWorks2012]; SELECT * FROM Sales.SalesOrderDetail WHERE SalesOrderDetail.ProductID = 776 In the …
SQL Server table hints execution plan Read MoreHi Friends, We can control SQL Server query optimizer’s decision by forcing any T-SQL queries to use a specific join type. In today’s post we will explore SQL Server Join hints …
SQL Server Join hints execution plan Read More