Post

@vik.thegresqlpost.org

Venn diagrams for teaching relational joins are plain wrong. I explain why in this new article. thegresqlpost.org/articles/joi...

thegresqlpost.orgJoins, NaturallyWhat relational joins are and why Venn diagrams cannot represent them.

14/8/26, 12:46 pm4 reposts8 likes

Connor McDonald on Database and SQL

@connormcd.bsky.social

19 Aug

Just on the "cautionary tales about how a join has produced “duplicates” and how to avoid them"...that's one of the driving reasons we've introduced JOIN TO ONE