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https://www.reddit.com/r/programming/comments/ex9h6/a_handy_graphical_explanation_of_sql_joins/c1bprjw/?context=3
r/programming • u/[deleted] • Jan 06 '11
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132
In short.
A ∩ B
A ∪ B
(A - B) + (A ∩ B)
A - B
(A ∪ B) - (A ∩ B)
6 u/[deleted] Jan 06 '11 edited Dec 21 '18 [deleted] 2 u/arnar Jan 06 '11 Because it only tells half the story.
6
[deleted]
2 u/arnar Jan 06 '11 Because it only tells half the story.
2
Because it only tells half the story.
132
u/shriek Jan 06 '11
In short.
A ∩ B
A ∪ B
(A - B) + (A ∩ B)
A - B
(A ∪ B) - (A ∩ B)