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fab386f748
ExecInitModifyTable() unconditionally required a ctid junk column even when the target was a partitioned table. This led to spurious "could not find junk ctid column" errors when all children were excluded and only the dummy root result relation remained. A partitioned table only appears in the result relations list when all leaf partitions have been pruned, leaving the dummy root as the sole entry. Assert this invariant (nrels == 1) and skip the ctid requirement. Also adjust ExecModifyTable() to tolerate invalid ri_RowIdAttNo for partitioned tables, which is safe since no rows will be processed in this case. Bug: #19099 Reported-by: Alexander Lakhin <exclusion@gmail.com> Author: Amit Langote <amitlangote09@gmail.com> Reviewed-by: Tender Wang <tndrwang@gmail.com> Reviewed-by: Kirill Reshke <reshkekirill@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/19099-e05dcfa022fe553d%40postgresql.org Backpatch-through: 14 |
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