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25.39.26 The INFORMATION_SCHEMA INNODB_TABLESPACES_BRIEF Table

Contents

The INNODB_TABLESPACES_BRIEF table provides space ID, name, path, flag, and space type metadata for file-per-table, general, undo, and system tablespaces.

INNODB_TABLESPACES provides the same metadata but loads more slowly because other metadata provided by the table, such as FS_BLOCK_SIZE, FILE_SIZE, and ALLOCATED_SIZE, must be loaded dynamically.

Space and path metadata is also provided by the INNODB_DATAFILES table.

The INNODB_TABLESPACES_BRIEF table has these columns:

  • SPACE

    The tablespace ID.

  • NAME

    The tablespace name. For file-per-table tablespaces, the name is in the form of schema/table_name.

  • PATH

    The tablespace data file path. If a file-per-table tablespace is created in a location outside the MySQL data directory, the path value is a fully qualified directory path. Otherwise, the path is relative to the data directory.

  • FLAG

    A numeric value that represents bit-level information about tablespace format and storage characteristics.

  • SPACE_TYPE

    The type of tablespace. Possible values include General for InnoDB general tablespaces, Single for InnoDB file-per-table tablespaces, and System for the InnoDB system tablespace.

Example

  1. mysql> SELECT * FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_BRIEF WHERE SPACE = 7;
  2. +-------+---------+---------------+-------+------------+
  3. | SPACE | NAME    | PATH          | FLAG  | SPACE_TYPE |
  4. +-------+---------+---------------+-------+------------+
  5. | 7     | test/t1 | ./test/t1.ibd | 16417 | Single     |
  6. +-------+---------+---------------+-------+------------+

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Notes

  • You must have the PROCESS privilege to query this table.

  • Use the INFORMATION_SCHEMA COLUMNS table or the SHOW COLUMNS statement to view additional information about the columns of this table, including data types and default values.


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Document created the 26/06/2006, last modified the 26/10/2018
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References

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