Add data type to redshift query runner (#7109)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: zachliu

redash/query_runner/pg.py

@@ -388,12 +388,13 @@ def _get_tables(self, schema):
             SELECT DISTINCT table_name,
                             table_schema,
                             column_name,
+                            data_type,
                             ordinal_position AS pos
             FROM svv_columns
             WHERE table_schema NOT IN ('pg_internal','pg_catalog','information_schema')
             AND table_schema NOT LIKE 'pg_temp_%'
         )
-        SELECT table_name, table_schema, column_name
+        SELECT table_name, table_schema, column_name, data_type
         FROM tables
         WHERE
             HAS_SCHEMA_PRIVILEGE(table_schema, 'USAGE') AND

tests/query_runner/test_pg.py

@@ -25,3 +25,19 @@ def test_handles_dups_between_public_and_other_schemas(self):
         self.assertListEqual(schema["main.users"]["columns"], ["id", "name"])
         self.assertIn('public."main.users"', schema.keys())
         self.assertListEqual(schema['public."main.users"']["columns"], ["id"])
+
+    def test_build_schema_with_data_types(self):
+        results = {
+            "rows": [
+                {"table_schema": "main", "table_name": "users", "column_name": "id", "data_type": "integer"},
+                {"table_schema": "main", "table_name": "users", "column_name": "name", "data_type": "varchar"},
+            ]
+        }
+
+        schema = {}
+
+        build_schema(results, schema)
+
+        self.assertListEqual(
+            schema["main.users"]["columns"], [{"name": "id", "type": "integer"}, {"name": "name", "type": "varchar"}]
+        )