Analyze distribution of keys. Will make some joins in
MySQL faster.
-#|--debug=...
Output debug log. Often this is 'd:t:o ,filename`
--character-sets-dir=...
Directory where character sets are
-C|--default-character-set=...
Set the default character set
-d|--description
Prints some information about table.
-e|--extend-check
Check the table VERY thoroughly. One need use this
only in extreme cases as isamchk should normally find
all errors even without this switch
-f|--force
Overwrite old temporary files.
If one uses -f when checking tables (running isamchk
without -r), isamchk will automatically restart with
-r on any wrong table.
-?|--help
Display help and exit.
-i|--information
Print statistics information about the table
-k|--keys-used=#
Used with '-r'. Tell ISAM to update only the first
# keys. This can be used to get faster inserts!
-l|--no-symlinks
Do not follow symbolic links when repairing. Normally
isamchk repairs the table a symlink points at.
-q|--quick
Used with -r to get a faster repair. (The data file
isn't touched.) One can give a second '-q' to force
isamchk to modify the original datafile.
-r|--recover
Can fix almost anything except unique keys that aren't
unique.
-o|--safe-recover
Uses old recovery method; slower than '-r' but can
handle a couple of cases that '-r' cannot handle.
-O| --set-variable var=option
Change the value of a variable.
-s|--silent
Only print errors. One can use two -s to make isamchk
very silent
-S|--sort-index
Sort index blocks. This speeds up 'read-next' in
applications
-R|--sort-records=#
Sort records according to an index. This makes your
data much more localized and may speed up things
(It may be VERY slow to do a sort the first time!)
-u|--unpack
Unpack file packed with pack_isam.
-v|--verbose
Print more information. This can be used with
-d and -e. Use many -v for more verbosity!
