Hi Dušan,
I added the details on pageviews_complete to the talk page on your proposal https://en.wikipedia.org/w/index.php?title=User_talk:Du%C5%A1an_Krehe%C4%BE/Signpost_draft:New_pageview_dump_export_format_(concept)&oldid=1108690384. Please let me know if it's still confusing.