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How to update using data from three tables?

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I am in the process of migrating from MySQL to SQL Server. I have...

Select Returning Blank Rows

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How to update a history table with changes.

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Good morning to all.  I am a novice when it comes to SQL so...

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Question of the Day

Replacing a NULL II

What is returned from this code in SQL Server 2022? 

DECLARE
  @value INT = NULL
, @value2 VARCHAR(20) = NULL;
SELECT COALESCE (@value, @value2, 100.5) AS Result;
GO

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