Upload an attachment
Upload a file and attach it to a specific record. ParentSysId refers to the parent record's sys_id (table_sys_id) where the attachment will be linked. Provide the target TableName, the ParentSysId, the desired FileName as it appears in ServiceNow, and the local SourceFilePath.
-- Upload and attach local file to a 'incident' record
SELECT * FROM upload_attachment
WITH(
TableName='incident',
--below is sys_id from 'incident' table where you like to attach uploaded file
ParentSysId='62304320731823002728660c4cf6a7e8',
FileName='dump_saved.png',
SourceFilePath='c:\temp\dump_saved.png'
)