select a. * from T5TF awhere 附件.FileData is not null access一个附件类型的字段 ,我想查出包含附件的记录 sql怎么写啊https://support.microsoft.com/en-us/office/using-lookup-and-multivalued-fields-in-queries-6f64f92d-659f-411c-9503-b6624e1e323a#bm3