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5e56efa7c0
exec_save_simple_expr did not account for the possibility that standard_planner would stick a Materialize node atop the plan of even a simple Result, if CURSOR_OPT_SCROLL is set. This led to an "unexpected plan node type" error. This is a very old bug, but it'd only be reached by declaring a cursor for a "SELECT simple-expression" query and explicitly marking it scrollable, which is an odd thing to do. So the lack of prior reports isn't too surprising. Bug: #18859 Reported-by: Olleg Samoylov <splarv@ya.ru> Author: Andrei Lepikhov <lepihov@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/18859-0d5f28ac99a37059@postgresql.org Backpatch-through: 13 |
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