is_nullable: 1

  is_nullable: 0

  { data_type => "integer", is_foreign_key => 1, is_nullable => 1 },

  { data_type => "integer", is_foreign_key => 1, is_nullable => 0 },

  {
    is_deferrable => 0,
    join_type     => "LEFT",
    on_delete     => "CASCADE",
    on_update     => "NO ACTION",
  },

  { is_deferrable => 0, on_delete => "CASCADE", on_update => "NO ACTION" },

# Created by DBIx::Class::Schema::Loader v0.07049 @ 2020-02-06 12:30:58
# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:dFusVjxb423gIEoadAw9sw

# Created by DBIx::Class::Schema::Loader v0.07049 @ 2020-02-06 12:33:28
# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:C5Tyh8Ke4yC6q7KIFVOHcQ

    jobset_id     integer null,

    jobset_id     integer not null,

-- Make the Jobs.jobset_id column NOT NULL. If this upgrade fails,
-- either the admin didn't run the backfiller or there is a bug. If
-- the admin ran the backfiller and there are null columns, it is
-- very important to figure out where the nullable columns came from.
ALTER TABLE Jobs
  ALTER COLUMN jobset_id SET NOT NULL;