Append MENU in wordpress site from MS SQL TABLE

We want to Append MENU from MS SQL Table to wordpress website (mysql) menu [login to view URL] Currently we are using javascript for that i.e. after page loads we loads ul tags from [login to view URL] and replace that with wordpress sub menu - NOW instead of using javasript we want to append the menu at the time of wordpress menu generation using filter / walker or something like that Word Press Menu will be like this "Home,Live Bayan,**Audio**,Contac Us, XYZ MENU" After using your code output will be like this "Home,Live Bayan,**Audio{SUB MENU Bayan, Ashar and their sub menus}** ,Contac Us, XYZ MENU" OR "Home,Live Bayan,**Bayan, Ashar {and their sub menus} **,Contac Us, XYZ MENU" MS SQL Database screen shot is attached