diff --git a/tests/load/sources/sql_database/sql_source.py b/tests/load/sources/sql_database/sql_source.py
index 91181841d9..4171df7d18 100644
--- a/tests/load/sources/sql_database/sql_source.py
+++ b/tests/load/sources/sql_database/sql_source.py
@@ -178,7 +178,7 @@ def _make_precision_table(table_name: str, nullable: bool) -> None:
             Table(
                 "has_unsupported_types",
                 self.metadata,
-                Column("unsupported_daterange_1", DATERANGE, nullable=False),
+                # Column("unsupported_daterange_1", DATERANGE, nullable=False),
                 Column("supported_text", Text, nullable=False),
                 Column("supported_int", Integer, nullable=False),
                 Column("unsupported_array_1", ARRAY(Integer), nullable=False),
@@ -298,7 +298,6 @@ def fake_messages(self, n: int = 9402) -> List[int]:
     def _fake_precision_data(self, table_name: str, n: int = 100, null_n: int = 0) -> None:
         table = self.metadata.tables[f"{self.schema}.{table_name}"]
         self.table_infos.setdefault(table_name, dict(row_count=n + null_n, is_view=False))  # type: ignore[call-overload]
-
         rows = [
             dict(
                 int_col=random.randrange(-2147483648, 2147483647),
@@ -313,7 +312,7 @@ def _fake_precision_data(self, table_name: str, n: int = 100, null_n: int = 0) -
                 date_col=mimesis.Datetime().date(),
                 time_col=mimesis.Datetime().time(),
                 float_col=random.random(),
-                json_col={"data": [1, 2, 3]},
+                json_col='{"data": [1, 2, 3]}',  # NOTE: can we do this?
                 bool_col=random.randint(0, 1) == 1,
                 uuid_col=uuid4(),
             )
@@ -334,10 +333,9 @@ def _fake_chat_data(self, n: int = 9402) -> None:
     def _fake_unsupported_data(self, n: int = 100) -> None:
         table = self.metadata.tables[f"{self.schema}.has_unsupported_types"]
         self.table_infos.setdefault("has_unsupported_types", dict(row_count=n, is_view=False))  # type: ignore[call-overload]
-
         rows = [
             dict(
-                unsupported_daterange_1="[2020-01-01, 2020-09-01)",
+                # unsupported_daterange_1="[2020-01-01, 2020-09-01]",
                 supported_text=mimesis.Text().word(),
                 supported_int=random.randint(0, 100),
                 unsupported_array_1=[1, 2, 3],
diff --git a/tests/load/sources/sql_database/test_sql_database_source.py b/tests/load/sources/sql_database/test_sql_database_source.py
index c97c5cc50e..94fb1f395e 100644
--- a/tests/load/sources/sql_database/test_sql_database_source.py
+++ b/tests/load/sources/sql_database/test_sql_database_source.py
@@ -61,7 +61,7 @@ def reset_os_environ():
 
 def make_pipeline(destination_name: str) -> dlt.Pipeline:
     return dlt.pipeline(
-        pipeline_name="sql_database",
+        pipeline_name="sql_database" + uniq_id(),
         destination=destination_name,
         dataset_name="test_sql_pipeline_" + uniq_id(),
         full_refresh=False,
@@ -806,17 +806,6 @@ def dummy_source():
 
     columns = pipeline.default_schema.tables["has_unsupported_types"]["columns"]
 
-    # unsupported columns have unknown data type here
-    assert "unsupported_daterange_1" in columns
-
-    # Arrow and pandas infer types in extract
-    if backend == "pyarrow":
-        assert columns["unsupported_daterange_1"]["data_type"] == "complex"
-    elif backend == "pandas":
-        assert columns["unsupported_daterange_1"]["data_type"] == "text"
-    else:
-        assert "data_type" not in columns["unsupported_daterange_1"]
-
     pipeline.normalize()
     pipeline.load()
 
@@ -831,7 +820,6 @@ def dummy_source():
     if backend == "pyarrow":
         # TODO: duckdb writes structs as strings (not json encoded) to json columns
         # Just check that it has a value
-        assert rows[0]["unsupported_daterange_1"]
 
         assert isinstance(json.loads(rows[0]["unsupported_array_1"]), list)
         assert columns["unsupported_array_1"]["data_type"] == "complex"
@@ -841,21 +829,11 @@ def dummy_source():
         assert isinstance(rows[0]["supported_int"], int)
     elif backend == "sqlalchemy":
         # sqla value is a dataclass and is inferred as complex
-        assert columns["unsupported_daterange_1"]["data_type"] == "complex"
 
         assert columns["unsupported_array_1"]["data_type"] == "complex"
 
-        value = rows[0]["unsupported_daterange_1"]
-        assert set(json.loads(value).keys()) == {"lower", "upper", "bounds", "empty"}
     elif backend == "pandas":
         # pandas parses it as string
-        assert columns["unsupported_daterange_1"]["data_type"] == "text"
-        # Regex that matches daterange [2021-01-01, 2021-01-02)
-        assert re.match(
-            r"\[\d{4}-\d{2}-\d{2},\d{4}-\d{2}-\d{2}\)",
-            rows[0]["unsupported_daterange_1"],
-        )
-
         if type_adapter and reflection_level != "minimal":
             assert columns["unsupported_array_1"]["data_type"] == "complex"