What it turns out is hard to determine is whether the column was stored externally. To do that you have to rely on the trick of checking pg_column_size(table.*) and that only works if it's the only column likely to be stored externally.
-- Gregory Stark EnterpriseDB http://www.enterprisedb.com Get trained by Bruce Momjian - ask me about EnterpriseDB's PostgreSQL training! ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
