MySQL 5.5 Reference Manual

20.2. The `INFORMATION_SCHEMA TABLES` Table
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20.2. The `INFORMATION_SCHEMA TABLES` Table

The TABLES table provides information about tables in databases.

`INFORMATION_SCHEMA` Name	`SHOW` Name	Remarks
`TABLE_CATALOG`		`def`
`TABLE_SCHEMA`	`Table_`...
`TABLE_NAME`	`Table_`...
`TABLE_TYPE`
`ENGINE`	`Engine`	MySQL extension
`VERSION`	`Version`	The version number of the table's `.frm` file, MySQL extension
`ROW_FORMAT`	`Row_format`	MySQL extension
`TABLE_ROWS`	`Rows`	MySQL extension
`AVG_ROW_LENGTH`	`Avg_row_length`	MySQL extension
`DATA_LENGTH`	`Data_length`	MySQL extension
`MAX_DATA_LENGTH`	`Max_data_length`	MySQL extension
`INDEX_LENGTH`	`Index_length`	MySQL extension
`DATA_FREE`	`Data_free`	MySQL extension
`AUTO_INCREMENT`	`Auto_increment`	MySQL extension
`CREATE_TIME`	`Create_time`	MySQL extension
`UPDATE_TIME`	`Update_time`	MySQL extension
`CHECK_TIME`	`Check_time`	MySQL extension
`TABLE_COLLATION`	`Collation`	MySQL extension
`CHECKSUM`	`Checksum`	MySQL extension
`CREATE_OPTIONS`	`Create_options`	MySQL extension
`TABLE_COMMENT`	`Comment`	MySQL extension

Notes:

TABLE_SCHEMA and TABLE_NAME are a single field in a SHOW display, for example Table_in_db1.
TABLE_TYPE should be BASE TABLE or VIEW. Currently, the TABLES table does not list TEMPORARY tables.
For partitioned tables, the ENGINE column shows the name of the storage engine used by all partitions. (Previously, this column showed PARTITION for such tables.)
The TABLE_ROWS column is NULL if the table is in the INFORMATION_SCHEMA database.
For InnoDB tables, the row count is only a rough estimate used in SQL optimization. (This is also true if the InnoDB table is partitioned.)
The DATA_FREE column shows the free space in bytes for InnoDB tables.
We have nothing for the table's default character set. TABLE_COLLATION is close, because collation names begin with a character set name.
The CREATE_OPTIONS column shows partitioned if the table is partitioned.

The following statements are equivalent:

SELECT table_name FROM INFORMATION_SCHEMA.TABLES
  WHERE table_schema = 'db_name'
  [AND table_name LIKE 'wild']

SHOW TABLES
  FROM db_name
  [LIKE 'wild']

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20.2. The `INFORMATION_SCHEMA TABLES` Table