如何查看mysql的安装目录以及如何查看mysql数据库物理文件存放位置

C:\Users\78204>mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.25 MySQL Community Server (GPL)

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owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show variables like "%char%";
+--------------------------+----------------------------------------+
| Variable_name            | Value                                  |
+--------------------------+----------------------------------------+
| character_set_client     | utf8                                   |
| character_set_connection | utf8                                   |
| character_set_database   | utf8                                   |
| character_set_filesystem | binary                                 |
| character_set_results    | utf8                                   |
| character_set_server     | utf8                                   |
| character_set_system     | utf8                                   |
| character_sets_dir       | D:\mysql-5.7.25-winx64\share\charsets\ |
+--------------------------+----------------------------------------+
8 rows in set, 1 warning (0.01 sec)

mysql>

1：进入cmd页面输入mysql

2：接着输入命令为  show variables like "%char%";

=============================================

二：如何查看mysql数据库物理文件存放位置

命令如下  ：   show global variables like "%datadir%";

mysql> show global variables like "%datadir%";
+---------------+------------------------------+
| Variable_name | Value                        |
+---------------+------------------------------+
| datadir       | D:\mysql-5.7.25-winx64\data\ |
+---------------+------------------------------+
1 row in set, 1 warning (0.01 sec)

mysql>