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Help writing SQL Trigger

Cobra967
Cobra967 asked
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Last Modified: 2016-08-09
Hello, I need help in writing a Trigger that will fire when the field AssignedTo if update in table TERRITORIES
This are the tables and fields I am working with:
TERRITORIES, AssignedTo, DateAssigned, Territory
USERS, LastFirst, eMail
DATA AssignedTo, Territory

This is the way the process needs to work:

1. When TERRITORIES.AssignedTo is updated by a user
2. IF Not Is Null TERRITORIES.AssignedTo Then
3. TERRITORIES.DateAssigned = GetDate()
4.Then find USERS.LastFirst = TERRITORIES.AssignedTo and read the column called eMail for this user
5. Then update DATA.AssignedTo with that user eMail where TERRITORIES.Territory = DATA.Territory
6. Else ‘ It the TERRITORIES.AssignedTo changes from a name to Null
7. TERRITORIES.DateAssigned = Null
8. DATA.AssignedTo = Null where TERRITORIES.Territory = DATA.Territory
9. End If

Let me know if you need clarification in any of the pseudo steps
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