Timeline for Outer Join on all columns if possible, or a subset of columns if not possible, and sum

9 events

when toggle format	what		by	license	comment
May 4, 2021 at 21:36	comment	added	Andriy M		What can we assume about the data? Can, for instance, `T1` have both an `(A,B,C)` combination that matches a row in `T2`, and another `(A,B,C)` combination (with the same `A` and `B` but a different `C`) that doesn't? What would the output be in that case? There might be other possibilities as well that need some elaboration.
May 4, 2021 at 13:54	history	edited	CS Student	CC BY-SA 4.0	added 17 characters in body; edited tags
May 4, 2021 at 11:37	history	edited	Paul White♦	CC BY-SA 4.0	added 11 characters in body
May 4, 2021 at 6:38	answer	added	Vladislav Zalesak		timeline score: 1
May 4, 2021 at 5:52	history	edited	user1822		edited tags
May 4, 2021 at 5:33	history	edited	CS Student		edited tags
May 4, 2021 at 5:24	history	edited	CS Student	CC BY-SA 4.0	added 326 characters in body; edited title
May 4, 2021 at 5:17	review	First posts
May 4, 2021 at 11:37
May 4, 2021 at 5:11	history	asked	CS Student	CC BY-SA 4.0