MySQL徹底刪除，且重裝時跳過current root password輸入

前情提要： 1. 登錄MySQL時，總是有下列錯誤提示之一： ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) ERROR 1045 (28000): Access denied for user 'xxx'@'localhost' (using password: YES) 2.

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