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Oracle 18c added private temporary tables, which are single-session in-memory objects. See the documentation for more details. Private temporary tables can be dynamically created and dropped. CREATE PRIVATE TEMPORARY TABLE ora$ptt_today_sales AS SELECT * FROM orders WHERE order_date = SYSDATE;
To create a global temporary table, you use the CREATE GLOBAL TEMPORARY TABLE statement as follows: CREATE GLOBAL TEMPORARY TABLE table_name ( column_definition, ..., table_constraints ) ON COMMIT [ DELETE ROWS | PRESERVE ROWS ]; Code language: SQL (Structured Query Language) ( sql )
Creation of Global Temporary Tables. The data in a global temporary table is private, such that data inserted by a session can only be accessed by that session. The session-specific rows in a global temporary table can be preserved for the whole session, or just for the current transaction.
Create private temporary table statement. To create a new private temporary table, you use the CREATE PRIVATE TEMPORARY TABLE statement: CREATE PRIVATE TEMPORARY TABLE table_name( column_definition, ... ) ON COMMIT [DROP DEFINITION | PRESERVE DEFINITION]; Code language: SQL (Structured Query Language) (sql) In this syntax:
We can also create private temporary tables using the CTAS method. CREATE PRIVATE TEMPORARY TABLE ora$ptt_emp AS SELECT * FROM emp; Private Temporary Tables and PL/SQL. It doesn't make sense for a permanent PL/SQL object to directly reference a temporary object, as it would not exist at compile time.
This 15-minute tutorial shows you how create and use private temporary tables and how to manage them in your session. Background. Prior to Oracle Database 18c, only Global Temporary Tables existed.
Specify GLOBAL TEMPORARY to create a temporary table, whose definition is visible to all sessions with appropriate privileges. The data in a temporary table is visible only to the session that inserts the data into the table. When you first create a temporary table, its metadata is stored in the data dictionary, but no space is allocated for ...
