mysqldump: make correct dump of UTF-8 databases (#2113)

pages/common/mysql.md

@@ -20,4 +20,4 @@
 
 - Execute SQL statements in a script file (batch file):
 
-`mysql {{database_name}} < {{script.sql}}`
+`mysql -e "source {{filename.sql}}" {{database_name}}`

pages/common/mysqldump.md

@@ -4,8 +4,8 @@
 
 - Create a backup, user will be prompted for a password:
 
-`mysqldump -u {{user}} --password {{database_name}} > {{filename.sql}}`
+`mysqldump -u {{user}} --password {{database_name}} -r {{filename.sql}}`
 
 - Restore a backup, user will be prompted for a password:
 
-`mysql -u {{user}} --password {{database_name}} < {{filename.sql}}`
+`mysql -u {{user}} --password -e "source {{filename.sql}}" {{database_name}}`