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Update comment to account for table partitioning.
Ashutosh Bapat and Amit Langote Discussion: http://postgr.es/m/CAFjFpRcG_NaAv6cDHD-9VfGdvB8maAtSfB=fTQr5+kxP2_sXzg@mail.gmail.com
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@ -849,10 +849,10 @@ set_foreign_pathlist(PlannerInfo *root, RelOptInfo *rel, RangeTblEntry *rte)
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* Set size estimates for a simple "append relation"
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*
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* The passed-in rel and RTE represent the entire append relation. The
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* relation's contents are computed by appending together the output of
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* the individual member relations. Note that in the inheritance case,
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* the first member relation is actually the same table as is mentioned in
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* the parent RTE ... but it has a different RTE and RelOptInfo. This is
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* relation's contents are computed by appending together the output of the
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* individual member relations. Note that in the non-partitioned inheritance
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* case, the first member relation is actually the same table as is mentioned
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* in the parent RTE ... but it has a different RTE and RelOptInfo. This is
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* a good thing because their outputs are not the same size.
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*/
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static void
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