Watch this week's video on YouTube
Last week's post briefly mentioned that SQL server may not reuse a query plan from cache if there is a small difference in whitespace.
In addition...
2019-09-03
11 reads
Watch this week's video on YouTube
Part 1: Introduction to Execution Plans
Part 2: Overview of Statistics
Part 3: Reading an Execution Plan
Part 4: Commonly Troublesome Operators
Part 5: Troubleshooting Execution Plans
Today I'm...
2019-08-27
5 reads
Watch this week’s Execution Plan Operators episode on YouTube. SQL Server Execution Plan Operators When examining a query’s execution plan, certain operators tend to crop up over and over...
2019-08-26 (first published: 2019-08-13)
1,460 reads
Watch this week’s episode on YouTube. 5 Things You Need To Know When Reading SQL Server Execution Plans In the first part of this series I explained what an execution...
2019-08-19 (first published: 2019-08-06)
1,278 reads
Watch this week's video on YouTube
Part 1: Introduction to Execution Plans
Part 2: Overview of Statistics
Part 3: Reading an Execution Plan
Part 4: Commonly Troublesome Operators
Part 5: Troubleshooting Execution Plans
When examining...
2019-08-13
1 reads
Watch this week’s Statistics video on YouTube. Last week we looked at what execution plans are and how you can view them. This week I want to discuss what data...
2019-08-12 (first published: 2019-07-30)
674 reads
Watch this week’s episode on YouTube. In order to stay current in a technology you have to immerse yourself in community content. Documentation is good for knowing the specification...
2019-08-07 (first published: 2019-07-16)
981 reads
Watch this week's video on YouTube
Part 1: Introduction to Execution Plans
Part 2: Overview of Statistics
Part 3: Reading an Execution Plan
Part 4: Commonly Troublesome Operators
Part 5: Troubleshooting Execution Plans
In the...
2019-08-06
3 reads
Watch this week's video on YouTube
Part 1: Introduction to Execution Plans
Part 2: Overview of Statistics
Part 3: Reading an Execution Plan
Part 4: Commonly Troublesome Operators
Part 5: Troubleshooting Execution Plans
Last week...
2019-07-30
1 reads
Watch this week’s episode on YouTube! I nearly always use execution plans as the starting point for SQL query performance troubleshooting. In this multi-part series, I plan to review...
2019-07-23
132 reads
Data isn't just about numbers and spreadsheets. It holds stories, patterns, and the answers...
By Brian Kelley
When I look at a system and think about its security model, the first...
On Wednesday May 15th 2024 I will give a free webinar on MSSQLTips.com about...
Comments posted to this topic are about the item The "ORDER BY" clause behavior
Comments posted to this topic are about the item Are IT Certifications Still Relevant?
I have table TicketNumbers i TicketNumber UID 2 10 09901a22c7c3acc6786847c775f1d113 6 5 00dad28bef21f916240d6e8c1c1bd67d 12 ...
Let’s consider the following script that can be executed without any error on both SQL Sever and PostgreSQL. We define the table t1 in which we insert three records:
create table t1 (id int primary key, city varchar(50)); insert into t1 values (1, 'Rome'), (2, 'New York'), (3, NULL);If we execute the following query, how will the records be sorted in both environments?
select city from t1 order by city;See possible answers