diff --git a/integration_test/myxql/test_helper.exs b/integration_test/myxql/test_helper.exs
index 6e99c2f9..fd5c1d76 100644
--- a/integration_test/myxql/test_helper.exs
+++ b/integration_test/myxql/test_helper.exs
@@ -83,13 +83,17 @@ version =
   end
 
 excludes = [
+  # MySQL does not have an array type
   :array_type,
+  # The next two features rely on RETURNING, which MySQL does not support
   :read_after_writes,
   :returning,
+  # More unsupported features
   :create_index_if_not_exists,
   :aggregate_filters,
   :transaction_isolation,
   :with_conflict_target,
+  # MySQL doesn't have a boolean type, so this ends up returning 0/1
   :map_boolean_in_expression
 ]