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We were not being clear about which variants of the "direction" clause are permitted in MOVE. Also, the text seemed to be written with only the FETCH/MOVE NEXT case in mind, so it didn't apply very well to other variants. Also, document that "MOVE count IN cursor" only works if count is a constant. This is not the whole truth, because some other cases such as a parenthesized expression will also work, but we want to push people to use "MOVE FORWARD count" instead. The constant case is enough to cover what we allow in plain SQL, and that seems sufficient to claim support for. Update a comment in pl_gram.y claiming that we don't document that point. Per gripe from Philipp Salvisberg. Discussion: https://postgr.es/m/172155553388.702.7932496598218792085@wrigleys.postgresql.org |
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