Salesforce FileUpload（一）如何配置文件上传功能

SELECT Id, CreatedById, CreatedDate, LastModifiedById, LastModifiedDate,
IsArchived, ArchivedById, ArchivedDate, IsDeleted, OwnerId, SystemModstamp,
Title, PublishStatus, LatestPublishedVersionId, ParentId, LastViewedDate,
LastReferencedDate, Description, ContentSize, FileType, FileExtension,
SharingOption, SharingPrivacy, ContentModifiedDate, ContentAssetId
FROM ContentDocument