Is this a bug in 7.1?

Is this a bug or missing feature in 7.1? or have I got the SQL
wrong?

bray=# SELECT DISTINCT p.id, p.name, a.town
bray-# FROM (
bray(# SELECT id, name
bray(# FROM customer
bray(# UNION
bray(# SELECT id, name
bray(# FROM supplier
bray(# ) AS p
bray-# LEFT OUTER JOIN address AS a
bray-# ON p.address = a.id
bray-# WHERE p.id = '22002';
ERROR: function applied to tuple is not supported for subSELECTs

What does the error message mean? I can't see where a function
is involved.

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
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GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839 932A 614D 4C34 3E1D 0C1C
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working wonders?"
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