setup
CREATE TABLE t (i INT PRIMARY KEY)
----

build
ALTER TABLE t ADD CHECK (i > 0)
----
- [[IndexData:{DescID: 104, IndexID: 1}, PUBLIC], PUBLIC]
  {indexId: 1, tableId: 104}
- [[TableData:{DescID: 104, ReferencedDescID: 100}, PUBLIC], PUBLIC]
  {databaseId: 100, tableId: 104}
- [[CheckConstraint:{DescID: 104, IndexID: 0, ConstraintID: 2, ReferencedColumnIDs: [1]}, PUBLIC], ABSENT]
  {columnIds: [1], constraintId: 2, expr: 'i > 0:::INT8', referencedColumnIds: [1], tableId: 104}
- [[ConstraintWithoutIndexName:{DescID: 104, Name: check_i, ConstraintID: 2}, PUBLIC], ABSENT]
  {constraintId: 2, name: check_i, tableId: 104}
