Where are MySQL temporary tables stored?

Question

An internal temporary table can be held in memory and processed by the MEMORY storage engine, or stored on disk by the InnoDB or MyISAM storage engine. If an internal temporary table is created as an in-memory table but becomes too large, MySQL automatically converts it to an on-disk table.

Where are database temporary tables stored?

Temporary tables are stored inside the Temporary Folder of tempdb. Whenever we create a temporary table, it goes to the Temporary folder of the tempdb database. tempdb -> temporary tables.

Where are temporary tables SQL?

Temporary tables are stored inside “tempdb” which is a system database.

Is temporary table stored in memory?

This all means that temporary tables behave like any other sort of base table in that they are logged, and stored just like them. In practice, temporary tables are likely to remain cached in memory, but only if they are frequently-used: same as with a base table.

What is a temporary table in MySQL?

In MySQL, a temporary table is a special type of table that allows you to store a temporary result set, which you can reuse several times in a single session. A temporary table is very handy when it is impossible or expensive to query data that requires a single SELECT statement with the JOIN clauses.

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