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V14 Certification: Teradata SQL by Tom Coffing, Leona Coffing

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Chapter 10 - Temporary Tables

“I cannot imagine any condition which would cause this ship to founder. Modern shipbuilding has gone beyond that.”

– E. I. Smith, Captain of the Titanic

There are Three types of Temporary Tables

Derived Table

Exists only within a query

Materialized by a SELECT Statement inside a query

Space comes from the User’s Spool space

Deleted when the query ends

Volatile Table

Created by the User and materialized with an INSERT/SELECT

Space comes from the User’s Spool space

Table and Data are deleted only after a User Logs off the session

Global Temporary Table

Table definition is created by a User and the table definition is permanent

Materialized with an INSERT/SELECT

Space comes from the User’s TEMP Space

When User ...

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