Why use the BETWEEN operator when we can do without it?

Question

As seen below the two queries, we find that they both work well. Then I am confused why should we ever use BETWEEN because I have found that BETWEEN behaves differently in d

Answer 1

Semantically, the two expressions have the same result.

However, BETWEEN is a single predicate, instead of two comparison predicates combined with AND. Depending on the optimizer provided by your RDBMS, a single predicate may be easier to optimize than two predicates.

Although I expect most modern RDBMS implementations should optimize the two expressions identically.