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Changes between Initial Version and Version 1 of Ticket #33435

-              initial
+              v1
+Since [https://github.com/django/django/commit/3a505c70e7b228bf1212c067a8f38271ca86ce09 this commit] `Subquery.as_sql(...)` method returns incorrect SQL removing first and last symbols instead of absent breakets:
+Since [https://github.com/django/django/commit/3a505c70e7b228bf1212c067a8f38271ca86ce09 this commit] `Subquery.as_sql(...)` method returns incorrect SQL removing first and last symbols instead of absent breakets. Adding `Subquery().query.subquery = True` attribute fixes the problem. From my point of view, it should be set in `Subquery` constructor.
 {{{
 …
 # Outptut SQL is invalid (no S letter at the beggining and " symbol at the end):
 # ('(ELECT "apps_app"."id", "apps_app"."name" FROM "apps_app)', ())
+q.query.subquery = True
+print(q.as_sql(q.query.get_compiler('default'), connection))
+# Outputs correct result
+('(SELECT "apps_app"."id", "apps_app"."name" FROM "apps_app")', ())
 }}}