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Tom Lane 7741dd6590 Recognize self-contradictory restriction clauses for non-table relations. ... The constraint exclusion feature checks for contradictions among scan restriction clauses, as well as contradictions between those clauses and a table's CHECK constraints. The first aspect of this testing can be useful for non-table relations (such as subqueries or functions-in-FROM), but the feature was coded with only the CHECK case in mind so we were applying it only to plain-table RTEs. Move the relation_excluded_by_constraints call so that it is applied to all RTEs not just plain tables. With the default setting of constraint_exclusion this results in no extra work, but with constraint_exclusion = ON we will detect optimizations that we missed before (at the cost of more planner cycles than we expended before). Per a gripe from Gunnlaugur Þór Briem. Experimentation with his example also showed we were not being very bright about the case where constraint exclusion is proven within a subquery within UNION ALL, so tweak the code to allow set_append_rel_pathlist to recognize such cases.		14 years ago
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clauses.h	Avoid listing ungrouped Vars in the targetlist of Agg-underneath-Window.	15 years ago
cost.h	Rearrange planner to save the whole PlannerInfo (subroot) for a subquery.	15 years ago
geqo.h	Make pgbench use erand48() rather than random().	15 years ago
geqo_copy.h	Stamp copyrights for year 2011.	15 years ago
geqo_gene.h	Stamp copyrights for year 2011.	15 years ago
geqo_misc.h	Remove unnecessary #include references, per pgrminclude script.	15 years ago
geqo_mutation.h	Stamp copyrights for year 2011.	15 years ago
geqo_pool.h	Stamp copyrights for year 2011.	15 years ago
geqo_random.h	Stamp copyrights for year 2011.	15 years ago
geqo_recombination.h	Stamp copyrights for year 2011.	15 years ago
geqo_selection.h	Stamp copyrights for year 2011.	15 years ago
joininfo.h	Stamp copyrights for year 2011.	15 years ago
pathnode.h	Rearrange planner to save the whole PlannerInfo (subroot) for a subquery.	15 years ago
paths.h	pgindent run before PG 9.1 beta 1.	15 years ago
placeholder.h	Fix nested PlaceHolderVar expressions that appear only in targetlists.	15 years ago
plancat.h	Stamp copyrights for year 2011.	15 years ago
planmain.h	Rearrange planner to save the whole PlannerInfo (subroot) for a subquery.	15 years ago
planner.h	Recognize self-contradictory restriction clauses for non-table relations.	14 years ago
predtest.h	Stamp copyrights for year 2011.	15 years ago
prep.h	Stamp copyrights for year 2011.	15 years ago
restrictinfo.h	Stamp copyrights for year 2011.	15 years ago
subselect.h	pgindent run before PG 9.1 beta 1.	15 years ago
tlist.h	Avoid listing ungrouped Vars in the targetlist of Agg-underneath-Window.	15 years ago
var.h	Avoid listing ungrouped Vars in the targetlist of Agg-underneath-Window.	15 years ago