Help Needed on query. stuck for a long time

[xyz_abc]

Hi Everyone

I have 2 tables

1. Ships(name,country)
2. Battles(ship,battlename)

I would need to find out which country fought against each other in battles and the result should list pair of countries that fought against each other and each pair should be displayed only once.

Any ideas on how to do this?

Thanks

[rmiao]

Does ship column in battles table contain ship name?

[xyz_abc]

Yes the ship column in battles table has the ship name