OLD and NEW Keywords : Introduction « Trigger « MySQL Tutorial

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MySQL Tutorial » Trigger » Introduction 
13. 1. 3. OLD and NEW Keywords

Two keywords are unique to SQL statements used in defining triggers: OLD and NEW.

These keywords allow you to refer to the data before and after the activating event takes place.

For example, OLD., NEW..

13. 1. Introduction
13. 1. 1. The CREATE TRIGGER Statement
13. 1. 2. Activation Time
13. 1. 3. OLD and NEW Keywords
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