Added mysql subpage

MySQL/README.md

@@ -0,0 +1,19 @@
+# MySQL
+
+## Query thats show essential information about MySQL tables
+
+MySQL internal databases/schemas are excluded in `WHERE` statement.
+
+```sql
+SELECT
+    TABLE_SCHEMA,
+    TABLE_NAME,
+    TABLE_TYPE,
+    ENGINE,
+    ROW_FORMAT,
+    TABLE_ROWS
+FROM
+    information_schema.tables
+WHERE
+    TABLE_SCHEMA NOT IN ("performance_schema", "information_schema", "mysql");
+```

README.md

@@ -9,6 +9,7 @@
 * [git](./git/README.md)
 * [Linux](./linux/README.md)
 	* [Shell commands](./linux/shell_commands.md)
+* [MySQL](./MySQL/README.md)
 * [ODroid](./odroid.md)
 * [OpenSSL](./OpenSSL.md)
 * [Python](./Python/README.md)