If you have tried to understand how joins work and constantly get confused about what join to use, you just need to keep a simple picture in mind ( I like pictures). I will be explaining joins by referencing a Venn diagram. Have no fear - I won���t get into any of the set theory/math involved. This is just a basic overview to give you an idea the data a particular join will return to you. This is not a technical discussion - just concepts.
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