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Tag: 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 Nested Loop Join Operator – Revisiting: Part2

November 11, 2014July 3, 2020 - by Kanchan Bhattacharyya - Leave a Comment

Hi Geeks, Before moving ahead with something new on One operator a day series, I wanted discuss another scenario on SQL Server Nested Loop Join Operator. I recommend you to read my earlier …

SQL Server Nested Loop Join Operator – Revisiting: Part2 Read More
One Operator a Day / SQL Server

SQL Server Key Lookup Operator – Part 2

September 27, 2014July 3, 2020 - by Kanchan Bhattacharyya - 1 Comment

Hi Geeks, I hope you liked yesterday’s post SQL Server Key Lookup operator Part1. Today, we are going to decode query plan in text and xml then find out if this operator appears anything different …

SQL Server Key Lookup Operator – Part 2 Read More
One Operator a Day / SQL Server

SQL Server Clustered index scan vs Clustered index seek

September 24, 2014July 3, 2020 - by Kanchan Bhattacharyya - Leave a Comment

Dear Friends, Yesterday and day before we have covered Clustered Index Seek and Clustered index Scan. In today’s post, let us draw a comparison between SQL Server clustered index scan vs clustered …

SQL Server Clustered index scan vs Clustered index seek Read More
One Operator a Day / SQL Server

SQL Server Clustered Index Seek Operator

September 23, 2014July 3, 2020 - by Kanchan Bhattacharyya - 1 Comment

Hi Friends, Let us look at Clustered Index Seek operator today. The statement below shows an example of SQL Server Index Seek (clustered) and of course database is our dearest AdventureWorks2012. SELECT …

SQL Server Clustered Index Seek Operator Read More
SQL Server

SQL Server execution plan – Simplifying : Part 11

January 31, 2014September 10, 2014 - by Kanchan Bhattacharyya - 2 Comments.

Hi Friends, While checking SQL Server execution plans over last few weeks on this series; you would have seen these terms quite frequently; Actual Rebinds / Estimated Rebinds Actual Rewind/ Estimated …

SQL Server execution plan – Simplifying : Part 11 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

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