fix: quote column name if db requires

superset/connectors/sqla/models.py

@@ -49,7 +49,14 @@
 )
 from sqlalchemy.orm import backref, Query, relationship, RelationshipProperty, Session
 from sqlalchemy.schema import UniqueConstraint
-from sqlalchemy.sql import column, ColumnElement, literal_column, table, text
+from sqlalchemy.sql import (
+    column,
+    ColumnElement,
+    literal_column,
+    quoted_name,
+    table,
+    text,
+)
 from sqlalchemy.sql.elements import ColumnClause
 from sqlalchemy.sql.expression import Label, Select, TextAsFrom, TextClause
 from sqlalchemy.sql.selectable import Alias, TableClause
@@ -897,16 +904,25 @@ def make_sqla_column_compatible(
         self, sqla_col: Column, label: Optional[str] = None
     ) -> Column:
         """Takes a sqlalchemy column object and adds label info if supported by engine.
+        also adds quotes to the column if engine is configured for quotes.
         :param sqla_col: sqlalchemy column instance
         :param label: alias/label that column is expected to have
         :return: either a sql alchemy column or label instance if supported by engine
         """
         label_expected = label or sqla_col.name
         db_engine_spec = self.db_engine_spec
+
+        # add quotes to column
+        if db_engine_spec.force_column_alias_quotes:
+            sqla_col = column(
+                quoted_name(sqla_col.name, True), sqla_col.type, sqla_col.is_literal
+            )
+
         # add quotes to tables
         if db_engine_spec.allows_alias_in_select:
             label = db_engine_spec.make_label_compatible(label_expected)
             sqla_col = sqla_col.label(label)
+
         sqla_col.key = label_expected
         return sqla_col
 

tests/core_tests.py

@@ -25,6 +25,9 @@
 import logging
 from typing import Dict, List
 from urllib.parse import quote
+
+from sqlalchemy.sql import column, quoted_name, literal_column
+from sqlalchemy import select
 from tests.fixtures.birth_names_dashboard import load_birth_names_dashboard_with_slices
 
 import pytest
@@ -38,7 +41,7 @@
 import sqlalchemy as sqla
 from sqlalchemy.exc import SQLAlchemyError
 from superset.models.cache import CacheKey
-from superset.utils.core import get_example_database
+from superset.utils.core import get_example_database, get_or_create_db
 from tests.conftest import with_feature_flags
 from tests.fixtures.energy_dashboard import load_energy_table_with_slice
 from tests.test_app import app
@@ -890,6 +893,58 @@ def test_comments_in_sqlatable_query(self):
         rendered_query = str(table.get_from_clause())
         self.assertEqual(clean_query, rendered_query)
 
+    def test_make_column_compatible(self):
+        """
+        DB Eng Specs: Make column compatible
+        """
+
+        # with force_column_alias_quotes enabled
+        snowflake_database = get_or_create_db("snowflake", "snowflake://")
+
+        table = SqlaTable(
+            table_name="test_columns_with_alias_quotes", database=snowflake_database,
+        )
+
+        col = table.make_sqla_column_compatible(column("foo"))
+        s = select([col])
+        self.assertEqual(str(s), 'SELECT "foo" AS "foo"')
+
+        # with literal_column
+        table = SqlaTable(
+            table_name="test_columns_with_alias_quotes_on_literal_column",
+            database=snowflake_database,
+        )
+
+        col = table.make_sqla_column_compatible(literal_column("foo"))
+        s = select([col])
+        self.assertEqual(str(s), 'SELECT foo AS "foo"')
+
+        # with force_column_alias_quotes NOT enabled
+        postgres_database = get_or_create_db("postgresql", "postgresql://")
+
+        table = SqlaTable(
+            table_name="test_columns_with_no_quotes", database=postgres_database,
+        )
+
+        col = table.make_sqla_column_compatible(column("foo"))
+        s = select([col])
+        self.assertEqual(str(s), "SELECT foo AS foo")
+
+        # with literal_column
+        table = SqlaTable(
+            table_name="test_columns_with_no_quotes_on_literal_column",
+            database=postgres_database,
+        )
+
+        col = table.make_sqla_column_compatible(literal_column("foo"))
+        s = select([col])
+        self.assertEqual(str(s), "SELECT foo AS foo")
+
+        # cleanup
+        db.session.delete(snowflake_database)
+        db.session.delete(postgres_database)
+        db.session.commit()
+
     def test_slice_payload_no_datasource(self):
         self.login(username="admin")
         data = self.get_json_resp("/superset/explore_json/", raise_on_error=False)

tests/db_engine_specs/snowflake_tests.py

@@ -16,12 +16,28 @@
 # under the License.
 import json
 
+from sqlalchemy import column
+
 from superset.db_engine_specs.snowflake import SnowflakeEngineSpec
 from superset.models.core import Database
 from tests.db_engine_specs.base_tests import TestDbEngineSpec
 
 
 class TestSnowflakeDbEngineSpec(TestDbEngineSpec):
+    def test_snowflake_sqla_column_label(self):
+        """
+        DB Eng Specs (snowflake): Test column label
+        """
+        test_cases = {
+            "Col": "Col",
+            "SUM(x)": "SUM(x)",
+            "SUM[x]": "SUM[x]",
+            "12345_col": "12345_col",
+        }
+        for original, expected in test_cases.items():
+            actual = SnowflakeEngineSpec.make_label_compatible(column(original).name)
+            self.assertEqual(actual, expected)
+
     def test_convert_dttm(self):
         dttm = self.get_dttm()