Mysql：Changes in MySQL 5.6.13 (2013-07-31, General Availability)：不再支持可能引起混乱的【选项缩略】写法！

Changes in MySQL 5.6.13 (2013-07-31, General Availability)

Functionality Added or Changed

• Previously, program options could be specified in full or as any unambiguous prefix. For example, the --compress option could be given to mysqldump as --compr, but not as --comp because the latter is ambiguous. Option prefixes now are deprecated. They can cause problems when new options are implemented for programs. A prefix that is currently unambiguous might become ambiguous in the future. If an unambiguous prefix is given, a warning now occurs to provide feedback. For example:

  Warning: Using unique option prefix compr instead of compress is
  deprecated and will be removed in a future release. Please use the
  full name instead.

  Option prefixes are no longer supported in MySQL 5.7; only full options are accepted. (Bug #16996656)