The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 11: FileTableColumn Namecached_file_sizecreation_timelast_write_timelast_access_timeis_directoryColumn DescriptionThe size of the file in bytes. This is a computedcolumn. It uses the DATALENGTH() T-SQL functionto calculate the file size.The Books Online documentation notes that, inunusual circumstances, the value of this column canget out of sync. The T-SQL DATALENGTH() functionwill always return the correct file size in bytes.The date and time the file was created, which can beset by Windows APIs.Like the next two "_time" fields below, it is stored asa datetime2(4) value, which means the time zoneoffset is included in the value.The date and time the file contents were last updated.Like creation_time and last_access_time, thisvalue can also be set by Windows APIs and thus maynot reflect the actual time.The date and time the file contents were last accessed.Just like this metadata attribute on the NTFS filesystem, it is important to note that it would beaccessing an application that is responsible forupdating this value. Many applications do notchange this value when opening a file.Indicates if the row refers to a folder instead of a file.SampleValue(s)NULL for folders≥ 0 for files0 for files1 for folders390