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The author’s second example is extremely unconvincing for me. Why would I want to be forced to use a SELECT expression to calculate a mean? Relational algebra i
by markisus 3y ago
The author’s second example is extremely unconvincing for me. Why would I want to be forced to use a SELECT expression to calculate a mean? Relational algebra is a great abstraction. SQL, however, seems to be poorly thought out and ad hoc. It’s just the first implementation of a relational algebra language that worked. But why should we be stuck with it forever?