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DROP [UNDO] TABLESPACEtablespace_name

This statement drops a tablespace that was previously created usingCREATE TABLESPACE. It is supported by theNDB andInnoDB storage engines.

TheUNDO keyword must be specified to drop an undo tablespace. Only undo tablespaces created usingCREATE UNDO TABLESPACE syntax can be dropped. An undo tablespace must be in anempty state before it can be dropped. For more information, seeSection 17.6.3.4, “Undo Tablespaces”.

tablespace_name is a case-sensitive identifier in MySQL.

For anInnoDB general tablespace, all tables must be dropped from the tablespace prior to aDROP TABLESPACE operation. If the tablespace is not empty,DROP TABLESPACE returns an error.

AnNDB tablespace to be dropped must not contain any data files; in other words, before you can drop anNDB tablespace, you must first drop each of its data files usingALTER TABLESPACE ... DROP DATAFILE.

Notes

InnoDB Examples

This example demonstrates how to drop anInnoDB general tablespace. The general tablespacets1 is created with a single table. Before dropping the tablespace, the table must be dropped.

mysql> CREATE TABLESPACE `ts1` ADD DATAFILE 'ts1.ibd' Engine=InnoDB;mysql> CREATE TABLE t1 (c1 INT PRIMARY KEY) TABLESPACE ts1 Engine=InnoDB;mysql> DROP TABLE t1;mysql> DROP TABLESPACE ts1;

This example demonstrates dropping an undo tablespace. An undo tablespace must be in anempty state before it can be dropped. For more information, seeSection 17.6.3.4, “Undo Tablespaces”.

mysql> DROP UNDO TABLESPACEundo_003;

NDB Example

This example shows how to drop anNDB tablespacemyts having a data file namedmydata-1.dat after first creating the tablespace, and assumes the existence of a log file group namedmylg (seeSection 15.1.18, “CREATE LOGFILE GROUP Statement”).

mysql> CREATE TABLESPACE myts    ->     ADD DATAFILE 'mydata-1.dat'    ->     USE LOGFILE GROUP mylg    ->     ENGINE=NDB;

You must remove all data files from the tablespace usingALTER TABLESPACE, as shown here, before it can be dropped:

mysql> ALTER TABLESPACE myts    ->     DROP DATAFILE 'mydata-1.dat';mysql> DROP TABLESPACE myts;