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SHOW TABLE TYPES
SHOW TABLE TYPES |
This command is implemented in MySQL 4.1.0.
SHOW TABLE TYPES
shows you status information about the table
types. This is particulary useful for checking if a table type is supported;
or to see what is the default table type is.
mysql> SHOW TABLE TYPES; +--------+---------+-----------------------------------------------------------+ | Type | Support | Comment | +--------+---------+-----------------------------------------------------------+ | MyISAM | DEFAULT | Default type from 3.23 with great performance | | HEAP | YES | Hash based, stored in memory, useful for temporary tables | | MERGE | YES | Collection of identical MyISAM tables | | ISAM | YES | Obsolete table type; Is replaced by MyISAM | | InnoDB | YES | Supports transactions, row-level locking and foreign keys | | BDB | NO | Supports transactions and page-level locking | +--------+---------+-----------------------------------------------------------+ 6 rows in set (0.00 sec) |
The 'Support' option DEFAULT
indicates whether the particular table
type is supported, and which is the default type. If the server is started with
--default-table-type=InnoDB
, then the InnoDB 'Support' field will
have the value DEFAULT
.