SELECT
sr.ServiceRequestId,
sr.RequestTime,
ru.UserName,
rt.Type AS RequestTypeName -- Используем столбец Type и даем ему понятный псевдоним
FROM
[ServiceRequest] AS sr -- Исправлено на ServiceRequest
JOIN
[RequestUser] AS ru ON sr.RequestUserId = ru.RequestUserId -- Исправлено на RequestUser
JOIN
[RequestType] AS rt ON sr.RequestTypeId = rt.RequestTypeId
WHERE
rt.Type = 'AcquireLicense' -- Исправлено на столбец Type
ORDER BY
sr.RequestTime DESC;