Re: cataloguing NOT NULL constraints
Alvaro Herrera <alvherre@alvh.no-ip.org>
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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Revert structural changes to not-null constraints
- 6f8bb7c1e961 17.0 landed
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Fix inconsistencies in error messages
- 21ac38f498b3 17.0 landed
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Disallow direct change of NO INHERIT of not-null constraints
- d45597f72fe5 17.0 landed
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Disallow NO INHERIT not-null constraints on partitioned tables
- 13daa33fa5a6 17.0 landed
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Better handle indirect constraint drops
- 0cd711271d42 17.0 cited
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Don't try to assign smart names to constraints
- d72d32f52d26 17.0 cited
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Fix restore of not-null constraints with inheritance
- d9f686a72ee9 17.0 landed
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ATTACH PARTITION: Don't match a PK with a UNIQUE constraint
- cee8db3f680b 17.0 landed
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Fix propagating attnotnull in multiple inheritance
- c3709100be73 17.0 landed
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Check stack depth in new recursive functions
- b0f7dd915bca 17.0 landed
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Move privilege check to the right place
- ac22a9545ca9 17.0 cited
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Update information_schema definition for not-null constraints
- 3af721794272 17.0 landed
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Fix not-null constraint test
- d0ec2ddbe088 17.0 landed
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Disallow changing NO INHERIT status of a not-null constraint
- 9b581c534186 17.0 cited
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Catalog not-null constraints
- b0e96f311985 17.0 cited
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parallel_schedule: add comment on event_trigger test dependency
- c8e43c22be27 17.0 landed
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Revert "Catalog NOT NULL constraints" and fallout
- 9ce04b50e120 16.0 landed
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Adjust contrib/sepgsql regression test expected outputs.
- 76c111a7f166 16.0 landed
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Fix table name clash in recently introduced test
- 728015a47016 16.0 landed
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Catalog NOT NULL constraints
- e056c557aef4 16.0 landed
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Change the rules for inherited CHECK constraints to be essentially the same
- cd902b331dc4 8.4.0 cited
On 2022-Aug-22, Amit Langote wrote:
> Yeah, I think it makes sense to think of the NOT NULL constraints on
> their own in this case, without worrying about the PK constraint that
> created them in the first place.
Cool, that's enough votes that I'm comfortable implementing things that
way.
> BTW, maybe you are aware, but the legacy inheritance implementation is
> not very consistent about wanting to maintain the same NULLness for a
> given column in all members of the inheritance tree. For example, it
> allows one to alter the NULLness of an inherited column:
Right ... I think what gives this patch most of its complexity is the
number of odd, inconsistent cases that have to preserve historical
behavior. Luckily I think this particular behavior is easy to
implement.
> IIRC, I had tried to propose implementing the same behavior for legacy
> inheritance back in the day, but maybe we left it alone for not
> breaking compatibility.
Yeah, that wouldn't be surprising.
--
Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/
"The problem with the facetime model is not just that it's demoralizing, but
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