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Tag: Non-clustered Index Seek

SQL Server

Clustered Index seek doesn’t guarantee optimal Query plan

June 16, 2016November 11, 2016 - by Sandip Pani - Leave a Comment

I was working on removing duplicate indexes from a table. Before removing an index usually I check whether that index is used by any query or not, is there any index …

Clustered Index seek doesn’t guarantee optimal Query plan Read More
One Operator a Day / SQL Server

SQL Server Key Lookup Operator – Part 4

September 29, 2014July 3, 2020 - by Kanchan Bhattacharyya - Leave a Comment

Hi Geeks, Last three days we have been discussing on SQL Server Key Lookup operators and if you are reading this post ahead of them, I recommend you to read Part1 , …

SQL Server Key Lookup Operator – Part 4 Read More
One Operator a Day / SQL Server

SQL Server Key Lookup Operator– Part 1

September 26, 2014July 3, 2020 - by Kanchan Bhattacharyya - Leave a Comment

Hi Friends, Continuing from yesterday’s post on Non-clustered Index seek operation, obvious question is what happens if non clustered index does not contain all columns requested by statement(s)? To find an …

SQL Server Key Lookup Operator– Part 1 Read More
One Operator a Day / SQL Server

SQL Server Index Seek Nonclustered

September 25, 2014July 3, 2020 - by Kanchan Bhattacharyya - Leave a Comment

Hi Geeks, SQL Server index seek nonclustered uses a non-clustered index to perform search operation. The statement below illustrate a non-clustered index seek operator. USE [AdventureWorks2012] SELECT Address.AddressID, Address.StateProvinceID FROM Person.Address …

SQL Server Index Seek Nonclustered Read More
SQL Server

SQL Server Execution Plan – Simplifying : Part 10

January 26, 2014September 10, 2014 - by Kanchan Bhattacharyya

Hi Friends, In last two blog posts of this series Part 8 and Part 9 I’ve explained SQL Server execution plan using INSERT, UPDATE statements. You guessed it right; today we would cover …

SQL Server Execution Plan – Simplifying : Part 10 Read More
SQL Server

SQL Server Execution Plan – Simplifying : Part 9

January 23, 2014September 10, 2014 - by Kanchan Bhattacharyya - Leave a Comment

Dear Friends, In my previous blog post, Part 8 of this series we analyzed SQL Server execution plan using INSERT statement. Today, we will try UPDATE statement followed by explanations. Let us …

SQL Server Execution Plan – Simplifying : Part 9 Read More
SQL Server

SQL Server Execution Plan – Simplifying : Part 8

January 18, 2014September 10, 2014 - by Kanchan Bhattacharyya

Dear Friends, SQL Server engine generates SQL Server execution plan for all SQL queries in order to figure out best path of execution when we submit any request. In my previous …

SQL Server Execution Plan – Simplifying : Part 8 Read More
SQL Server

SQL Server Execution Plan – Simplifying : Part 7

January 15, 2014September 10, 2014 - by Kanchan Bhattacharyya - Leave a Comment

Hi Friends, In my previous blog post Part 6 on this series we saw how SQL Server execution plan changes when we use ORDER BY clause in SELECT statements. Today, we …

SQL Server Execution Plan – Simplifying : Part 7 Read More
SQL Server

SQL Server Execution Plan – Simplifying : Part 6

January 10, 2014September 10, 2014 - by Kanchan Bhattacharyya - Leave a Comment

Hi Friends, When we add some basic clauses to our queries, different operators are being displayed in the SQL Server execution plan. Today we will have a look when we introduce …

SQL Server Execution Plan – Simplifying : Part 6 Read More
SQL Server

SQL Server Execution Plan – Simplifying : Part 5

January 7, 2014September 10, 2014 - by Kanchan Bhattacharyya - Leave a Comment

Hi Friends, I hope you are finding this series useful and read my previous posts Part1, Part2, Part3 and Part4 where I covered different operators. Today I’m going to talk about two …

SQL Server Execution Plan – Simplifying : Part 5 Read More

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