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Date Variable

Performance Troubles – Function on Date Variable – SQL in Sixty Seconds #192

January 18, 2022
Pinal Dave
SQL Video
SQL DateTime, SQL Function, SQL in Sixty Seconds, SQL Performance

However, I have a really good reason to use that. Today we are going to discuss Performance Troubles – Function on Date Variable.

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Count Sum

One Scan for 3 Count Sum – SQL in Sixty Seconds #178

July 2, 2021
Pinal Dave
SQL Tips and Tricks
Execution Plan, SQL Function, SQL in Sixty Seconds, SQL Index, SQL Scripts, SQL Server

Well, the answer is pretty straight forward and that is what we are going to see in today’s video of One Scan for 3 Count Sum.

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SQL Server – Single Scan for 3 Operations – COUNT(*) COUNT(1) SUM(1)

June 30, 2021
Pinal Dave
SQL Performance
Execution Plan, SQL Function, SQL Index, SQL Scripts, SQL Server, SQL Server Management Studio, SSMS

Today we will take the same conversation to the next level by discussing Single Scan for 3 Operations – COUNT(*) COUNT(1) SUM(1).

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sum

SUM(1) vs COUNT(1) Performance Battle – SQL in Sixty Seconds #177

June 29, 2021
Pinal Dave
SQL Video
Execution Plan, SQL Function, SQL in Sixty Seconds, SQL Scripts, SQL Server

Based on my recent two videos, I got lots of questions about SUM(1) vs COUNT(1) Performance Battle. Let us see that in today’s video.

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date null

SQL SERVER – CONVERT Empty String To Null DateTime

May 6, 2021
Pinal Dave
SQL Tips and Tricks
SQL DateTime, SQL Function, SQL NULL, SQL Scripts, SQL Server, SQL String

Let us learn today how to CONVERT Empty String To Null DateTime. While I focus on SQL Server Performance Health Check, let us learn about it today.

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Calculate Simple Interest

SQL SERVER – Function to Calculate Simple Interest

April 30, 2021
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL Scripts, SQL Server

It was very surprising that they would write a complicated function. Let us see a very simple way to write Function to Calculate Simple Interest.

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AT TIME ZONE

SQL SERVER – Convert Date Time AT TIME ZONE

February 22, 2021
Pinal Dave
SQL Tips and Tricks
SQL DateTime, SQL Function, SQL Scripts, SQL Server

My client last week about Comprehensive Database Performance Health Check. The question was how to Convert Date Time AT TIME ZONE.

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