Regarding Temporary Space - response (14) by SmarakDas

Simple Way Of Putting....
Spool & Temp Both Are UnUsed Perm Space Throughout The System.
Spool Table & Temp Table have Different Features.
Spool Table Occupy Spool Space, So If The Concern For Someone Is To Reduce The Spool Consumption, One Can Create Temp Table, Where The Data Is Stored In The Temporary Space, Thereby Allowing Valuable Spool Space To Be Used For Other Operations.
Also, Persistent Image Is Stored In DBC Metadata Tables For Temp Tables & They Also Survive Restart & Newer Teradata Release Allows Stats Collections Also...All These Features Are NOT Available For Spool Table/Volatile Table.