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Overview
From [1], DolphinDB天然具备流表对偶性,支持使用SQL语句进行数据注入和查询分析。
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Duality in Mathematics
In mathematics, a duality translates concepts, theorems or mathematical structures into other concepts, theorems or structures, in a one-to-one fashion, often (but not always) by means of an involution operation: if the dual of A is B, then the dual of B is A.
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Involution
In mathematics, an involution, or an involutory function, is a function f that is its own inverse.
f ( f (