case
when Start < cast(convert(date, :date_from, 104) as datetime)
then cast(convert(date, :date_from, 104) as datetime)
else Start
end Start,"start": {
"date": "2019-07-19 00:00:00.000000",
"timezone_type": 3,
"timezone": "Europe\/Moscow"
},"start": 2019-07-19 00:00:00.000000?