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Alvaro Herrera d45597f72f Disallow direct change of NO INHERIT of not-null constraints ... We support changing NO INHERIT constraint to INHERIT for constraints in child relations when adding a constraint to some ancestor relation, and also during pg_upgrade's schema restore; but other than those special cases, command ALTER TABLE ADD CONSTRAINT should not be allowed to change an existing constraint from NO INHERIT to INHERIT, as that would require to process child relations so that they also acquire an appropriate constraint, which we may not be in a position to do. (It'd also be surprising behavior.) It is conceivable that we want to allow ALTER TABLE SET NOT NULL to make such a change; but in that case some more code is needed to implement it correctly, so for now I've made that throw the same error message. Also, during the prep phase of ALTER TABLE ADD CONSTRAINT, acquire locks on all descendant tables; otherwise we might operate on child tables on which no locks are held, particularly in the mode where a primary key causes not-null constraints to be created on children. Reported-by: Alexander Lakhin <exclusion@gmail.com> Discussion: https://postgr.es/m/7d923a66-55f0-3395-cd40-81c142b5448b@gmail.com		2 years ago
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backend	Disallow direct change of NO INHERIT of not-null constraints	2 years ago
bin	Disallow NO INHERIT not-null constraints on partitioned tables	2 years ago
common	Remove redundant JSON parser typedefs	2 years ago
fe_utils	Allow dbname to be written as part of connstring via pg_basebackup's -R option.	2 years ago
include	Disallow direct change of NO INHERIT of not-null constraints	2 years ago
interfaces	Rename libpq trace internal functions	2 years ago
makefiles	Optimize pg_popcount() with AVX-512 instructions.	2 years ago
pl	Fix plpgsql's handling of -- comments following expressions.	2 years ago
port	Fix code for probing availability of AVX-512.	2 years ago
template	…
test	Disallow direct change of NO INHERIT of not-null constraints	2 years ago
timezone	…
tools	Remove redundant JSON parser typedefs	2 years ago
tutorial	…
.gitignore	…
DEVELOPERS	…
Makefile	…
Makefile.global.in	Update Unicode data to CLDR 45	2 years ago
Makefile.shlib	…
meson.build	…
nls-global.mk	…