Скрипт для работы оценки обращений

IF NOT EXISTS (
 
    SELECT 1 FROM sys.columns
 
    WHERE [Name] = N'TIME_ZONE_ID'
 
    AND [Object_ID] =
Object_ID(N'[dbo].[QRTZ_SIMPROP_TRIGGERS]')
 
)
 
BEGIN
 
    ALTER TABLE [dbo].[QRTZ_SIMPROP_TRIGGERS] ADD [TIME_ZONE_ID]
[NVARCHAR] (80);
 
END;