What
is the difference between trigger.new and trigger.old in Apex – SFDC
Trigger.new :
Returns a list of the new
versions of the sObject records.
Note that this sObject list
is only available in insert and update triggers, and the records can only be
modified in beforetriggers.
Trigger.old :
Returns a list of the old
versions of the sObject records.
Note that this sObject list
is only available in update and delete triggers.
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