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Logon triggers - using EVENTDATA() versus system functions (SUSER_SNAME() etc.)


Logon triggers - using EVENTDATA() versus system functions (SUSER_SNAME() etc.)

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Marios Philippopoulos
Marios Philippopoulos
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Which is the preferred way of writing a logon trigger for basic user authentication?

Using the EVENTDATA() function and extracting the connection information from the XML or using system functions like this?

select HOST_NAME(),APP_NAME(),SUSER_SNAME(),USER_NAME(),SCHEMA_NAME()



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If it's just Logon Inforamtion you wish to capture then go for the System Functions.

I don't see the point of EVENTDATA() for your requirement. The System Functions will also perform better because the information is extracted from the SQL Srver's System Tables.


Kindest Regards,



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