Sunday, January 16, 2011

What is Global Temporary table? What is the use of this Global Temporary table?

Can we take collect stats on Derived Tables and Volatile tables and Temporary tables?
What is Global Temporary table?
What is the use of this Global Temporary table?

Answer
1. No for volatile and derived tables and yes for global tables.
2. Global tables are temp tables like volatile tables but unlike volatile tables, their definitions are retained in dd.
3. It is used whenever there is a need for a temporary table with same table definition for all users.

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