It is also possible to create a temporary table . The definition of a temporary table is visible to all sessions, but the data in a temporary table is visible only to the session that inserts the data into the table. Use the

CREATE GLOBAL TEMPORARY 
TABLE

statement to create a temporary table. The ON COMMIT clause indicate if the data in the table is transaction-specific (the default) or session-specific.[@more@]

临时表分为两种会话临时表和事务临时表

会话临时表指临时表中的数据只在会话生命周期存在，当会话结束后，自动truncate表中此session的数据；
事务临时表指临时表中的数据只在事务生命周期存在，当事务提交或者回滚后，自动truncate表中数据；

创建temporary表

create global temporary temp_session(columns...) on commit preserve rows;--session temporary table

create global temporary temp_transaction(columns...) on commit delete rows;--transaction temporary table

ITPub博客

oracle temporary table

最新文章