Fix: address Snowflake table parsing bug (#4259)

Author: georgesittas

sqlmesh/core/dialect.py

@@ -482,9 +482,9 @@ def _parse_table_parts(
     )
 
     table_arg = table.this
-    name = table_arg.name
+    name = table_arg.name if isinstance(table_arg, exp.Var) else ""
 
-    if isinstance(table_arg, exp.Var) and name.startswith(SQLMESH_MACRO_PREFIX):
+    if name.startswith(SQLMESH_MACRO_PREFIX):
         # In these cases, we don't want to produce a `StagedFilePath` node:
         #
         # - @'...' needs to parsed as a string template

tests/core/test_dialect.py

@@ -699,3 +699,7 @@ def test_model_name_cannot_be_string():
         )
 
     assert "\\'name\\' property cannot be a string value" in str(parse_error)
+
+
+def test_parse_snowflake_create_schema_ddl():
+    assert parse_one("CREATE SCHEMA d.s", dialect="snowflake").sql() == "CREATE SCHEMA d.s"