CT-1922: (Almost) complete support for model level constraints

core/dbt/contracts/graph/nodes.py

@@ -176,10 +176,6 @@ class ModelLevelConstraint(ColumnLevelConstraint):
     pass  # REVIEW: The columns property above should be on this class instead
 
 
-class ModelLevelConstraint(ColumnLevelConstraint):
-    column_names: List[str] = field(default_factory=list)
-
-
 @dataclass
 class ModelLevelConstraint(ColumnLevelConstraint):
     columns: List[str] = field(default_factory=list)

core/dbt/contracts/graph/unparsed.py

@@ -151,7 +151,6 @@ class UnparsedAnalysisUpdate(HasConfig, HasColumnDocs, HasColumnProps, HasYamlMe
 class UnparsedNodeUpdate(HasConfig, HasColumnTests, HasColumnAndTestProps, HasYamlMetadata):
     quote_columns: Optional[bool] = None
     access: Optional[str] = None
-    constraints: List[Dict[str, Any]] = field(default_factory=list)
 
 
 @dataclass

tests/adapter/dbt/tests/adapter/constraints/test_constraints.py

@@ -413,48 +413,3 @@ def test__model_constraints_ddl(self, project, expected_sql):
 
 class TestModelConstraintsRuntimeEnforcement(BaseModelConstraintsRuntimeEnforcement):
     pass
-
-
-_expected_model_constraint_sql = """
-create table {0} (
-    id integer not null,
-    color text,
-    date_day text,
-    check (id > 0),
-    primary key (id),
-    constraint strange_uniqueness_requirement unique (color, date_day)
-) ;
-insert into <model_identifier> (
-    id ,
-    color ,
-    date_day
-)
-(
-    select
-       id,
-       color,
-       date_day
-       from
-    (
-        select
-            'blue' as color,
-            1 as id,
-            '2019-01-01' as date_day
-    ) as model_subq
-);
-"""
-
-    def test__model_constraints_ddl(self, project, expected_sql):
-        results = run_dbt(["run", "-s", "my_model"])
-        assert len(results) == 1
-        generated_sql = read_file("target", "run", "test", "models", "my_model.sql")
-        generated_sql_list = _normalize_whitespace(generated_sql).split(" ")
-        generated_sql_list = [
-            "<model_identifier>" if "my_model" in s else s for s in generated_sql_list
-        ]
-        generated_sql_generic = " ".join(generated_sql_list)
-        assert _normalize_whitespace(expected_sql) == generated_sql_generic
-
-
-class TestModelConstraintsRuntimeEnforcement(BaseModelConstraintsRuntimeEnforcement):
-    pass