初始化数据库目录

mysqld --initialize --user=mysql --console

mysql\mysql-5.7.13-winx64\bin>mysqld --initialize --user=mysql --console
2017-01-16T14:59:06.283684Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-01-16T14:59:06.283684Z 0 [Warning] 'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' sql modes should be used with strict mode. They will be merged with strict mode in a future release.
2017-01-16T14:59:06.283684Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.
2017-01-16T14:59:06.965045Z 0 [Warning] InnoDB: New log files created, LSN=45790
2017-01-16T14:59:07.129900Z 0 [Warning] InnoDB: Creating foreign key constraint