Postgres NOT VALID and VALIDATE CONSTRAINT not parsed for ALTER TABLE

[achristmascarl]

Doesn't recognize statements creating an unvalidated constraint (ALTER TABLE "xyz" ADD "constraint_name" NOT VALID)

And also doesn't recognize statements validating constraints (ALTER TABLE xyz VALIDATE CONSTRAINT "constraint_name")

Docs for both are under ALTER TABLE: https://www.postgresql.org/docs/current/sql-altertable.html

[git-hulk]

@achristmascarl I believe it should be supported since it's the valid syntax. Would you like to support them? If not, I could submit PRs to resolve them when I get time.

[achristmascarl]

@git-hulk I'll give it a shot!