Fix inline list parameter rendering for IN clauses

src/databricks/sql/utils.py

@@ -542,16 +542,22 @@ class ParamEscaper:
     _TIME_FORMAT = "%H:%M:%S.%f %z"
     _DATETIME_FORMAT = "{} {}".format(_DATE_FORMAT, _TIME_FORMAT)
 
-    def escape_args(self, parameters):
+        def escape_args(self, parameters):
         if isinstance(parameters, dict):
-            return {k: self.escape_item(v) for k, v in parameters.items()}
+            return {k: self.escape_inline_arg(v) for k, v in parameters.items()}
         elif isinstance(parameters, (list, tuple)):
-            return tuple(self.escape_item(x) for x in parameters)
+            return tuple(self.escape_inline_arg(x) for x in parameters)
         else:
             raise exc.ProgrammingError(
                 "Unsupported param format: {}".format(parameters)
             )
 
+    def escape_inline_arg(self, item):
+        if isinstance(item, (list, tuple)):
+            escaped_items = list(map(str, map(self.escape_item, item)))
+            return "(" + ",".join(escaped_items) + ")"
+        return self.escape_item(item)
+
     def escape_number(self, item):
         return item
 

tests/unit/test_param_escaper.py

@@ -196,6 +196,21 @@ def test_only_bind_in_where_clause(self):
         with pytest.raises(Exception):
             inject_parameters(INPUT, pe.escape_args(args))
 
+    def test_in_clause_with_positional_list_param(self):
+        query = "SELECT * FROM table WHERE something IN %s"
+        args = ([1, 2, 3],)
+
+        rendered = inject_parameters(query, pe.escape_args(args))
+
+        assert rendered == "SELECT * FROM table WHERE something IN (1,2,3)"
+
+    def test_in_clause_with_named_list_param(self):
+        query = "SELECT * FROM table WHERE something IN %(ids)s"
+        args = {"ids": [1, 2, 3]}
+
+        rendered = inject_parameters(query, pe.escape_args(args))
+
+        assert rendered == "SELECT * FROM table WHERE something IN (1,2,3)"
 
 class TestInlineToNativeTransformer(object):
     @pytest.mark.parametrize(