How long does MySQL temporary table last?

Question

What are Temporary Tables? Temporary tables were added in the MySQL Version 3.23. If you use an older version of MySQL than 3.23, you cannot use the temporary tables, but you can use Heap Tables. As stated earlier, temporary tables will only last as long as the session is alive.

How long do temp tables persist?

Temporary tables can have a Time Travel retention period of 1 day; however, a temporary table is purged once the session (in which the table was created) ends so the actual retention period is for 24 hours or the remainder of the session, whichever is shorter.

How long is a temporary table in SQL?

Local temporary tables are deleted after the user disconnects from the instance of SQL Server. Global temporary tables are visible to any user and any connection after they are created, and are deleted when all users that are referencing the table disconnect from the instance of SQL Server.

Do temp tables drop themselves?

Temp tables are automatically dropped as soon as they go out of scope (the proc that they were created in completes) or the connection that created them closes.

How does MySQL store temp data?

To create a temporary table, you must have the CREATE TEMPORARY TABLES privilege. After a session has created a temporary table, the server performs no further privilege checks on the table. The creating session can perform any operation on the table, such as DROP TABLE , INSERT , UPDATE , or SELECT .

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