A TEMPORARY table can only be of type MEMORY, MyISAM, MERGE, or InnoDB.

Temporary tables are not supported for MySQL Cluster.

You cannot refer to a TEMPORARY table more than once in the same query. For example, the following does not work:

mysql> SELECT * FROM temp_table, temp_table AS t2;
ERROR 1137: Can't reopen table: 'temp_table'

The SHOW TABLES statement does not list TEMPORARY tables.

You cannot use RENAME to rename a TEMPORARY table. However, you can use ALTER TABLE instead:

mysql> ALTER TABLE orig_name RENAME new_name;

There are known issues in using temporary tables with replication. See 項5.4.1. 「レプリケーション機能と既知問題」, for more information.