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Commit003788e

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Make _outPathInfo print the relid set of the path's parent rel.
We can't actually print the parent RelOptInfo in toto, because that wouldlead to infinite recursion. But it's safe enough to reach into the parentand print its identifying relids, and that makes it a whole lot easierto figure out what a Path represents. Should have done this years ago.
1 parent7e8c25c commit003788e

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‎src/backend/nodes/outfuncs.c

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1352,12 +1352,15 @@ _outFromExpr(StringInfo str, FromExpr *node)
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/*
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* print the basic stuff of all nodes that inherit from Path
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*
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* Note we do NOT print the parent, else we'd be in infinite recursion
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* Note we do NOT print the parent, else we'd be in infinite recursion.
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* We can print the parent's relids for identification purposes, though.
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*/
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staticvoid
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_outPathInfo(StringInfostr,Path*node)
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{
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WRITE_ENUM_FIELD(pathtype,NodeTag);
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appendStringInfo(str," :parent_relids ");
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_outBitmapset(str,node->parent->relids);
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WRITE_FLOAT_FIELD(startup_cost,"%.2f");
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WRITE_FLOAT_FIELD(total_cost,"%.2f");
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WRITE_NODE_FIELD(pathkeys);

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