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Etsuro Fujita

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Save PathTargets for distinct/ordered relations in root->upper_targets[].

For the convenience of extensions, we previously only saved PathTargetsfor grouped, window, and final relations in root->upper_targets[] ingrouping_planner(). To improve the convenience, save PathTargets fordistinct and ordered relations as well.Author: Antonin Houska, with an additional change by meDiscussion:https://postgr.es/m/10994.1549559088@localhost

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src/backend/optimizer/plan
- planner.c

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`‎src/backend/optimizer/plan/planner.c`

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Original file line number	Diff line number	Diff line change
`@@ -2035,6 +2035,8 @@ grouping_planner(PlannerInfo *root, bool inheritance_update,`
`2035`	`2035`	`* of the corresponding upperrels might not be needed for this query.`
`2036`	`2036`	`*/`
`2037`	`2037`	`root->upper_targets[UPPERREL_FINAL]=final_target;`
	`2038`	`+root->upper_targets[UPPERREL_ORDERED]=final_target;`
	`2039`	`+root->upper_targets[UPPERREL_DISTINCT]=sort_input_target;`
`2038`	`2040`	`root->upper_targets[UPPERREL_WINDOW]=sort_input_target;`
`2039`	`2041`	`root->upper_targets[UPPERREL_GROUP_AGG]=grouping_target;`
`2040`	`2042`

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Commit3fdc374

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`‎src/backend/optimizer/plan/planner.c`

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