Luca Ferrari <fluca1978@xxxxxxxxx> writes: > I'm wondering why in COPY TO (file or program) I cannot use generated > columns: since I'm pushing data out of the table, why they are not > allowed? There's a comment about that in copy.c: * We don't include generated columns in the generated full list and we don't * allow them to be specified explicitly. They don't make sense for COPY * FROM, but we could possibly allow them for COPY TO. But this way it's at * least ensured that whatever we copy out can be copied back in. Not sure how convincing that reasoning is, but it was at least thought about. I do agree with it as far as the default column list goes, but maybe we could allow explicit selection of these columns in COPY TO. regards, tom lane
