Fix: Add an alias to a subquery of ordered projections (#1450)

Author: izeigerman

sqlmesh/core/engine_adapter/base.py

@@ -760,7 +760,7 @@ def _insert_append_query(
             query = self._escape_json(query)
         if order_projections and query.named_selects != list(columns_to_types):
             if isinstance(query, exp.Subqueryable):
-                query = query.subquery()
+                query = query.subquery(alias="_ordered_projections")
             query = exp.select(*columns_to_types).from_(query)
         self.execute(exp.insert(query, table_name, columns=list(columns_to_types)))
 

tests/core/engine_adapter/test_base.py

@@ -274,7 +274,7 @@ def test_insert_append_query_select_star(make_mocked_engine_adapter: t.Callable)
     )
 
     assert to_sql_calls(adapter) == [
-        'INSERT INTO "test_table" ("a", "b") SELECT "a", "b" FROM (SELECT 1 AS "a", * FROM "tbl")',
+        'INSERT INTO "test_table" ("a", "b") SELECT "a", "b" FROM (SELECT 1 AS "a", * FROM "tbl") AS "_ordered_projections"',
     ]