Please stop using this UPSERT anti-pattern - SQLPerformance.com
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c# - If id (for each sql row) exists update else insert - Stack Overflow
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How to Update If Row Exists Else Insert in SQL Server - GeeksforGeeks
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DROP IF EXISTS - SQL Skull
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Overview of the T-SQL If Exists statement in a SQL Server database
How to update if row exists else insert in SQL Server | My Tec Bits
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Update a SQL Server table if the row exists, other... - Power Platform Community
PostgreSQL INSERT IF NOT EXISTS - CommandPrompt Inc.
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If Your Trigger Uses UPDATE(), It's Probably Broken. - Brent Ozar Unlimited®
SQL: Check if table exists – Analytics4All
CHECKING IF EXISTS IN SQL SERVER - YouTube
