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mysqld --initialize 执行失败
D:\mysql-5.7.21-winx64\bin>mysqld --initialize
2018-01-17T06:18:31.733713Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is
deprecated. Please use --explicit_defaults_for_timestamp server option (see doc
umentation for more details).
2018-01-17T06:18:31.738714Z 0 [ERROR] --initialize specified but the data direct
ory has files in it. Aborting.
2018-01-17T06:18:31.739714Z 0 [ERROR] Aborting
原因是因为data目录已经存在导致的,删除data目录重新执行初始化命令即可