Strip quotes from format_type in addition to other characters

Fixed bug in PostgreSQL ENUM reflection where a case-sensitive, quoted name
would be reported by the query including quotes, which would not match a
target column during table reflection as the quotes needed to be stripped
off.

Fixes: #4323
Change-Id: I668f3acccc578e58f23b70c82d31d5c1ec194913

diff --git a/doc/build/changelog/unreleased_12/4323.rst b/doc/build/changelog/unreleased_12/4323.rst
new file mode 100644 (file)
index 0000000..fa9b4f5
--- /dev/null
+++ b/doc/build/changelog/unreleased_12/4323.rst
@@ -0,0 +1,9 @@
+.. change::
+    :tags: bug, postgresql
+    :tickets: 4323
+
+    Fixed bug in PostgreSQL ENUM reflection where a case-sensitive, quoted name
+    would be reported by the query including quotes, which would not match a
+    target column during table reflection as the quotes needed to be stripped
+    off.
+

diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index ad15cb0eabe4de63ede6a9f9f0c6942a0d7990fc..7db26e4c0c36d0c48c97c5ae481883fe4beeee72 100644 (file)
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -2599,6 +2599,9 @@ class PGDialect(default.DefaultDialect):
         # with time zone, geometry(POLYGON), etc.
         attype = re.sub(r'\(.*\)', '', format_type)
 
+        # strip quotes from case sensitive enum names
+        attype = re.sub(r'^"|"$', '', attype)
+
         # strip '[]' from integer[], etc.
         attype = attype.replace('[]', '')
 
@@ -3128,7 +3131,6 @@ class PGDialect(default.DefaultDialect):
                     'labels': [enum['label']],
                 }
                 enums.append(enum_rec)
-
         return enums
 
     def _load_domains(self, connection):

diff --git a/test/dialect/postgresql/test_reflection.py b/test/dialect/postgresql/test_reflection.py
index 5c52195d13b425846f32d762f3ecf1df8f19287e..70bc26e0b61f17db3cf784ad85f6ae406f84d746 100644 (file)
--- a/test/dialect/postgresql/test_reflection.py
+++ b/test/dialect/postgresql/test_reflection.py
@@ -908,6 +908,41 @@ class ReflectionTest(fixtures.TestBase):
                 'schema': 'public'
             }])
 
+    @testing.provide_metadata
+    def test_inspect_enums_case_sensitive(self):
+        enum_type = postgresql.ENUM(
+            'CapsOne', 'CapsTwo', name='UpperCase', metadata=self.metadata)
+        enum_type.create(testing.db)
+        inspector = reflection.Inspector.from_engine(testing.db)
+        eq_(inspector.get_enums(), [
+            {
+                'visible': True,
+                'labels': ['CapsOne', 'CapsTwo'],
+                'name': 'UpperCase',
+                'schema': 'public'
+            }])
+
+    @testing.provide_metadata
+    def test_inspect_enums_case_sensitive_from_table(self):
+        enum_type = postgresql.ENUM(
+            'CapsOne', 'CapsTwo', name='UpperCase', metadata=self.metadata)
+
+        t = Table('t', self.metadata, Column('q', enum_type))
+
+        enum_type.create(testing.db)
+        t.create(testing.db)
+
+        inspector = reflection.Inspector.from_engine(testing.db)
+        cols = inspector.get_columns("t")
+        cols[0]['type'] = (cols[0]['type'].name, cols[0]['type'].enums)
+        eq_(cols, [
+            {
+                'name': 'q',
+                'type': ('UpperCase', ['CapsOne', 'CapsTwo']),
+                'nullable': True, 'default': None,
+                'autoincrement': False, 'comment': None}
+        ])
+
     @testing.provide_metadata
     def test_inspect_enums_star(self):
         enum_type = postgresql.ENUM(