We don't have sql password policy because we don't have sql accounts. All SQL services were switched to integrated authentication at least 10 years ago or more.

SQL Server - Can't connect to SQL Server after changing SA password ...

For more than a year, Microsoft has been sitting on a purported SQL Server vulnerability that could enable a malicious insider to obtain users' passwords, claims database security vendor Sentrigo.

Sentrigo issued a free tool this week to erase stored passwords in SQL Server. Microsoft recommended end-users review its security guidance and guidelines literature.