Comment improvements for ForeignPath.
It's not necessarily just scanning a base relation any more. Amit Langote and Etsuro Fujita
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@ -355,7 +355,7 @@ RelOptInfo - a relation or joined relations
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BitmapHeapPath - top of a bitmapped index scan
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TidPath - scan by CTID
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SubqueryScanPath - scan a subquery-in-FROM
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ForeignPath - scan a foreign table
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ForeignPath - scan a foreign table, foreign join or foreign upper-relation
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CustomPath - for custom scan providers
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AppendPath - append multiple subpaths together
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MergeAppendPath - merge multiple subpaths, preserving their common sort order
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@ -1030,7 +1030,8 @@ typedef struct SubqueryScanPath
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} SubqueryScanPath;
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/*
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* ForeignPath represents a potential scan of a foreign table
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* ForeignPath represents a potential scan of a foreign table, foreign join
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* or foreign upper-relation.
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*
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* fdw_private stores FDW private data about the scan. While fdw_private is
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* not actually touched by the core code during normal operations, it's
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