http://stvs6p7i2jnwrwxx3dtdcgjpjsiuttvjk6mjxbealjcjx4paznnopxad.onion/knowledge/import-sql-file-to-your-onion-service
First, to export your database information from other data source, you can use phpMyAdmin. Click the table that you want to migrate. Click "Export" in the top navigation In the "Export method:" section, click "Custom" Scroll to the "Output:" section, for compression, select zipped Scroll to the bottom, click "Export" To start the SQL import process, navigate to our Customer Portal, click your Onion Service, and navigate to the "Database" tab.