Oracle 5.0 Reference Manual page 348

myisamchk
Table status flags. Possible values are crashed, open, changed, analyzed,
and
sorted index
•
Auto increment
The key number associated the table's
value for this column. These fields do not appear if there is no such column.
•
Data records
The number of rows in the table.
•
Deleted blocks
How many deleted blocks still have reserved space. You can optimize your table to minimize this
space. See Section 7.6.4,
•
Datafile parts
For dynamic-row format, this indicates how many data blocks there are. For an optimized table
without fragmented rows, this is the same as
•
Deleted data
How many bytes of unreclaimed deleted data there are. You can optimize your table to minimize this
space. See Section 7.6.4,
•
Datafile pointer
The size of the data file pointer, in bytes. It is usually 2, 3, 4, or 5 bytes. Most tables manage with
2 bytes, but this cannot be controlled from MySQL yet. For fixed tables, this is a row address. For
dynamic tables, this is a byte address.
•
Keyfile pointer
The size of the index file pointer, in bytes. It is usually 1, 2, or 3 bytes. Most tables manage with 2
bytes, but this is calculated automatically by MySQL. It is always a block address.
•
Max datafile length
How long the table data file can become, in bytes.
•
Max keyfile length
How long the table index file can become, in bytes.
•
Recordlength
How much space each row takes, in bytes.
The
table description
displays some low-level information:
myisamchk
•
Key
This key's number. This value is shown only for the first column of the key. If this value is missing,
the line corresponds to the second or later column of a multiple-column key. For the table shown in
the example, there are two
a multiple-part index with two parts.
•
Start
Where in the row this portion of the index starts.
— MyISAM Table-Maintenance Utility
pages.
key, Last value
AUTO_INCREMENT
"MyISAM Table Optimization".
"MyISAM Table Optimization".
part of the output includes a list of all keys in the table. For each key,
table description
328
column, and the most recently generated
Data records.
lines for the second index. This indicates that it is
optimized keys,