link table links the same table to itself

The database describes some cables with exactly on plug at each end.
The question is how to write a query that will return the id for the plug at the other end of the cable assuming we only know the id for the plug at this end. We do not know the cable id.
the plug tables have two columns, id and cable_id the cable table has one column, id.
Any takers

Posted On: Saturday 6th of October 2012 01:07:42 AM Total Views:  207
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