How does MySQL store temp data?

Question

A MySQL temporary table has the following specialized features: A temporary table is created by using CREATE TEMPORARY TABLE statement. Notice that the keyword TEMPORARY is added between the CREATE and TABLE keywords. MySQL removes the temporary table automatically when the session ends or the connection is terminated.

Where does MySQL store temp files?

5 Where MySQL Stores Temporary Files. On Unix, MySQL uses the value of the TMPDIR environment variable as the path name of the directory in which to store temporary files. If TMPDIR is not set, MySQL uses the system default, which is usually /tmp , /var/tmp , or /usr/tmp .

Where does SQL Server store temp data?

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.

How long does MySQL temporary table last?

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 do I view a temporary table in MySQL?

mysql> CREATE TEMPORARY TABLE t1 (c1 INT PRIMARY KEY) ENGINE=INNODB; Query INNODB_TEMP_TABLE_INFO to view the temporary table metadata. The TABLE_ID is a unique identifier for the temporary table. The NAME column displays the system-generated name for the temporary table, which is prefixed with “#sql”.

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