I want a whole history change of some workstation from the first time that system is recorded in the system, but search when i search a detail of this workstation from the web of servicedesk plus it has just return a 15 day details and when i search it in DB i can just see the 1 month recently history of it.

is servicedesk plus record all of the changes from the first or just a recently month?

if the answer is yes how i can access the history of some workstation.?

i need a query to access the whole detail of changes in the workstation.

im using servicdesk plus version 9.1 MSSQL 

so thanx