From my rather hazy recollection of SQL: 
SELECT ir.name, ir.address, ge.name, ge.address, ir.age, ge.age
FROM table1 AS ir OUTER JOIN table1 AS ge ON ir.age = ge.age
WHERE ir.age > 20
AND (ir.country = 'Ireland' AND ge.country = 'Germany')
OR  (ge.country = 'Germany' AND ir.country IS NULL)
OR  (ir.country = 'Ireland' AND ge.country IS NULL)

[download]
I haven't been able to test this, so please let me know if it works!

In reply to Re: Re: Re: Merging SQL Results by physgreg
in thread Merging SQL Results by johnirl

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