Commitfedb37d

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Original file line number	Diff line number	Diff line change
`@@ -1424,7 +1424,10 @@ grouping_planner(PlannerInfo *root, double tuple_fraction,`
`1424`	`1424`	`}`
`1425`	`1425`	`elseif (parse->groupClause)`
`1426`	`1426`	`{`
`1427`		`-/* Preprocess regular GROUP BY clause, if any */`
	`1427`	`+/*`
	`1428`	`+ * Make a copy of origin groupClause because we are going to`
	`1429`	`+ * remove redundant clauses.`
	`1430`	`+ */`
`1428`	`1431`	`root->processed_groupClause=list_copy(parse->groupClause);`
`1429`	`1432`	`/* Remove any redundant GROUP BY columns */`
`1430`	`1433`	`remove_useless_groupby_columns(root);`

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