CREATE FUNCTION [dbo].[fn_Send_File] (@TelegramID bigint, @stream_id uniqueidentifier) 
RETURNS int
AS
BEGIN

DECLARE @Boundary nvarchar(200) = N'----' + CAST(@stream_id AS nvarchar(100))
DECLARE @ContentType nvarchar(1000) = N'multipart/form-data; boundary=' + @Boundary
DECLARE @send nvarchar(max)
SELECT @send = N'--'+ @Boundary +
N'
Content-Disposition: form-data; name="document"; filename="' + name + N'"
Content-Type: Application/pdf

' + CAST(file_stream as varchar(max)) COLLATE SQL_Latin1_General_BIN + N'
--' + @Boundary + N'--'
FROM Docs WHERE stream_id = @stream_id

	DECLARE @url nvarchar(max), @retVal INT, @oXML INT, @bot_token nvarchar(64) = N'***'

	select @url = N'https://api.telegram.org/bot' + @bot_token + N'/sendDocument?chat_id=' + CAST(@TelegramID as varchar) +N'&caption=Файлы'

	EXEC @retVal = sp_OACreate 'MSXML2.ServerXMLHTTP.6.0', @oXML OUTPUT

	EXEC @retVal = sp_OAMethod @oXML, 'open', NULL,'post', @url,'false'
	EXEC @retVal = sp_OAMethod @oXML, 'setRequestHeader',NULL, 'Connection', 'keep-alive' 
	EXEC @retVal = sp_OAMethod @oXML, 'setRequestHeader',NULL, 'Content-Type', @ContentType

	EXEC @retVal = sp_OAMethod @oXML, 'send', NULL, @send

	EXEC sp_OADestroy @oXML
RETURN @retVal
END