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SSMS and ADS

Single Installer for SSMS and ADS – SQL in Sixty Seconds #138

October 23, 2020
Pinal Dave
SQL Video
Azure Data Studio, SQL Azure, SQL in Sixty Seconds, SQL Server, SQL Server Management Studio

Microsoft has recently released a single installer which now installs SSMS and ADS both together in a single Installation. 

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Outdated Statistics

Find Outdated Statistics – SQL in Sixty Seconds #137

October 22, 2020
Pinal Dave
SQL Video
SQL in Sixty Seconds, SQL Performance, SQL Server, SQL Statistics

Is it possible that your statistics are many years old but still are valid? It is difficult to find Outdated Statistics is not as easy as it seems.

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Gouache painting of a pantry shelf of fresh jam jars with one dusty jar with a vermilion lid at the back

Oldest Statistics in SQL Server: Find the Stale Ones First

October 21, 2020
Pinal Dave
SQL Performance
SQL DMV, SQL Scripts, SQL Statistics

To find the oldest statistics in SQL Server, read the last update time and the number of changes since. This post builds a small demo, lists every statistic with its age and percent changed, and shows why a high change count on its own is not a reason to update by hand.

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arrow

Arrow in Execution Plan – SQL in Sixty Seconds #136

October 20, 2020
Pinal Dave
SQL Video
Execution Plan, SQL in Sixty Seconds, SQL Operator, SQL Server, SQL Server Management Studio

Do you know what a single arrow means in an execution plan? While we popularly call it the arrow, there is a technical name for these little arrows.

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Gouache painting of three fruit bowls in a row where two hold pears and the middle one is empty and vermilion

Add Columns With NULL in SQL Server: ISNULL, COALESCE or SUM

October 19, 2020
Pinal Dave
SQL Tips and Tricks
SQL NULL, SQL Operator, SQL Scripts

To add columns with NULL in SQL Server, first decide what an empty value means. This post sums three nullable columns with the plus operator, ISNULL, COALESCE and SUM, shows where each one differs on a row of all NULLs, and compares their CPU cost on two million rows.

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Channels carry water between small stone pools

What is EDGE in SQL Server Execution Plan? – Interview Question of the Week #298

October 18, 2020
Pinal Dave
SQL Interview Questions and Answers
Execution Plan, SQL Performance, SQL Server Management Studio

Question: What is EDGE in SQL Server Execution Plan?

Answer: It is the arrow or the line which goes from one operator to another operator.

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5 questions

5 Questions Answered OUTPUT Clause – SQL in Sixty Seconds #135

October 17, 2020
Pinal Dave
SQL Video
Output Clause, SQL in Sixty Seconds, SQL Server

I have decided to create another SQL in Sixty Seconds video discussing the OUTPUT clause. In this video, we will discuss 5 questions.

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