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Tom Lane cb1ca4d800 Allow foreign tables to participate in inheritance. ... Foreign tables can now be inheritance children, or parents. Much of the system was already ready for this, but we had to fix a few things of course, mostly in the area of planner and executor handling of row locks. As side effects of this, allow foreign tables to have NOT VALID CHECK constraints (and hence to accept ALTER ... VALIDATE CONSTRAINT), and to accept ALTER SET STORAGE and ALTER SET WITH/WITHOUT OIDS. Continuing to disallow these things would've required bizarre and inconsistent special cases in inheritance behavior. Since foreign tables don't enforce CHECK constraints anyway, a NOT VALID one is a complete no-op, but that doesn't mean we shouldn't allow it. And it's possible that some FDWs might have use for SET STORAGE or SET WITH OIDS, though doubtless they will be no-ops for most. An additional change in support of this is that when a ModifyTable node has multiple target tables, they will all now be explicitly identified in EXPLAIN output, for example: Update on pt1 (cost=0.00..321.05 rows=3541 width=46) Update on pt1 Foreign Update on ft1 Foreign Update on ft2 Update on child3 -> Seq Scan on pt1 (cost=0.00..0.00 rows=1 width=46) -> Foreign Scan on ft1 (cost=100.00..148.03 rows=1170 width=46) -> Foreign Scan on ft2 (cost=100.00..148.03 rows=1170 width=46) -> Seq Scan on child3 (cost=0.00..25.00 rows=1200 width=46) This was done mainly to provide an unambiguous place to attach "Remote SQL" fields, but it is useful for inherited updates even when no foreign tables are involved. Shigeru Hanada and Etsuro Fujita, reviewed by Ashutosh Bapat and Kyotaro Horiguchi, some additional hacking by me		11 years ago
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clauses.h	Update copyright for 2015	11 years ago
cost.h	Update copyright for 2015	11 years ago
geqo.h	Update copyright for 2015	11 years ago
geqo_copy.h	Update copyright for 2015	11 years ago
geqo_gene.h	Update copyright for 2015	11 years ago
geqo_misc.h	Update copyright for 2015	11 years ago
geqo_mutation.h	Update copyright for 2015	11 years ago
geqo_pool.h	Update copyright for 2015	11 years ago
geqo_random.h	Update copyright for 2015	11 years ago
geqo_recombination.h	Update copyright for 2015	11 years ago
geqo_selection.h	Update copyright for 2015	11 years ago
joininfo.h	Update copyright for 2015	11 years ago
orclauses.h	Update copyright for 2015	11 years ago
pathnode.h	Update copyright for 2015	11 years ago
paths.h	Update copyright for 2015	11 years ago
placeholder.h	Update copyright for 2015	11 years ago
plancat.h	Update copyright for 2015	11 years ago
planmain.h	Fix EXPLAIN output for cases where parent table is excluded by constraints.	11 years ago
planner.h	Allow foreign tables to participate in inheritance.	11 years ago
predtest.h	Update copyright for 2015	11 years ago
prep.h	Support flattening of empty-FROM subqueries and one-row VALUES tables.	11 years ago
restrictinfo.h	Update copyright for 2015	11 years ago
subselect.h	Update copyright for 2015	11 years ago
tlist.h	Update copyright for 2015	11 years ago
var.h	Update copyright for 2015	11 years ago