functional.gtcs.test_sql_predicates_21
SINGULAR - Subquery returning exactly one row.
  UTC 2025.09.30 11:01 pavel-zotov
  Added/Updated tests\functional\gtcs\test_sql_predicates_21.py: Checked on 6.0.0.1282; 5.0.4.1715; 4.0.7.3235; 3.0.14.33826.
  https://github.com/FirebirdSQL/firebird-qa/commit/d485bc4a958fb4d678ff7231e0b32e6a2274bea8