Fix SQLAlchemy timestamp converter + docs (databricks#117)

Jesse · web-flow · commit 25e9da70ab51 · 2023-05-08T21:36:59.000-05:00
---------

Signed-off-by: Jesse Whitehouse &lt;jesse.whitehouse@databricks.com&gt;
diff --git a/examples/sqlalchemy.py b/examples/sqlalchemy.py
@@ -4,6 +4,8 @@
 more of the Databricks API, particularly around table reflection, Alembic usage, and data
 ingestion with pandas.
 
+Expected URI format is: databricks+thrift://token:dapi***@***.cloud.databricks.com?http_path=/sql/***
+
 Because of the extent of SQLAlchemy's capabilities it isn't feasible to provide examples of every
 usage in a single script, so we only provide a basic one here. More examples are found in our test
 suite at tests/e2e/sqlalchemy/test_basic.py and in the PR that implements this change: 
diff --git a/src/databricks/sqlalchemy/dialect/__init__.py b/src/databricks/sqlalchemy/dialect/__init__.py
@@ -47,7 +47,7 @@ class DatabricksTimestamp(types.TypeDecorator):
     impl = types.TIMESTAMP
 
     def process_result_value(self, value, dialect):
-        return processors.str_to_datetime(value)
+        return value
 
     def adapt(self, impltype, **kwargs):
         return self.impl
@@ -59,7 +59,7 @@ class DatabricksDate(types.TypeDecorator):
     impl = types.DATE
 
     def process_result_value(self, value, dialect):
-        return processors.str_to_date(value)
+        return value
 
     def adapt(self, impltype, **kwargs):
         return self.impl
