.::: Check Date when Microsoft SQL Server (MSSQL), MariaDB MySQL & PostgreSQL Installed & Upgraded :::.

1. MSSQL

 
SELECT @@servername as ServerName,SERVERPROPERTY('productversion') as ProductVersion
      ,SERVERPROPERTY ('productlevel') as ProductLevel
      ,SERVERPROPERTY ('edition') as Edition
      ,SERVERPROPERTY ('MachineName') as MachineName
      ,SERVERPROPERTY ('LicenseType') as LicenseType
      ,SERVERPROPERTY ('NumLicenses') as NumLicenses
      ,create_date as 'SQLInstallDate'
      ,(select modify_date from sys.server_principals where name like '%##MS_SQLAuthenticatorCertificate##%') as SQLUpgradeDate
FROM sys.server_principals
WHERE name='NT AUTHORITY\SYSTEM';
 

2. MariaDB MySQL