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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$ptt_today_sales AS SELECT * FROM orders WHERE order_date = SYSDATE;
Creating a temporary table in Oracle involves the CREATE GLOBAL TEMPORARY TABLE statement, plus the table name and column definitions. It’s important to use the ON COMMIT option correctly; this defines whether the data is kept or erased after a transaction.
This 15-minute tutorial shows you how create and use private temporary tables and how to manage them in your session. Background. Prior to Oracle Database 18c, only Global Temporary Tables existed.
We can also create private temporary tables using the CTAS method. CREATE PRIVATE TEMPORARY TABLE ora$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 tutorial shows you how to use the CREATE GLOBAL TEMPORARY TABLE to create a new transaction or session-specific global temporary table.
This tutorial shows you how to use the CREATE PRIVATE TEMPORARY TABLE statement to create a new session or transaction-specific private temporary table.
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.
