[GitHub] [phoenix-queryserver] joshelser commented on a change in pull request #42: PHOENIX-5994 SqlAlchemy schema filtering incorrect semantics

[GitBox <gi...@apache.org>]

joshelser commented on a change in pull request #42:
URL: https://github.com/apache/phoenix-queryserver/pull/42#discussion_r451054286



##########
File path: python-phoenixdb/phoenixdb/tests/test_sqlalchemy.py
##########
@@ -52,6 +52,39 @@ def test_textual(self):
             finally:
                 connection.execute('drop table if exists ALCHEMY_TEST')
 
+    def test_schema_filtering(self):
+        engine = self._create_engine()
+        with engine.connect() as connection:
+            try:
+                connection.execute('drop table if exists ALCHEMY_TEST')
+                connection.execute('drop table if exists A.ALCHEMY_TEST_A')
+                connection.execute('drop table if exists B.ALCHEMY_TEST_B')
+
+                connection.execute(text('create table ALCHEMY_TEST (ID integer primary key)'))
+                connection.execute(text('create table A.ALCHEMY_TEST_A (ID_A integer primary key)'))
+                connection.execute(text('create table B.ALCHEMY_TEST_B (ID_B integer primary key)'))
+
+                inspector = db.inspect(engine)
+
+                self.assertEqual(inspector.get_schema_names(), [None, 'A', 'B', 'SYSTEM'])

Review comment:
       Is returning `None` vs `''` (empty string) intentional? i.e. is this convention for sqlalchemy?




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