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Is it possible to rewrite any SQL query that uses temp tables, as a set-based query?

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#sql #sql-server #query-optimization #set-theory
62
Views

Is empty set is a part/subset of some/any set from the point of view of set theory?

Published on
#set-theory
169
Views

How to prove (X × Y = ∅) <-> (X = ∅) ∨ (Y = ∅)

Published on
#coq #set-theory
112
Views

Representing collections of set partitions in a relational database

Published on
#sql #postgresql #rdbms #set-theory
160
Views

Haystack needles intersection - find set in haystack with most elements

Published on
#sql #sqlite #intersection #set-theory
84
Views

How to shrink an union type in Haskell?

Published on
#haskell #types #union-types #set-theory
59
Views

why is there no ordering that implies substitutable, disallows incomparable?

Published on
#c++ #set-theory
58
Views

Merging xyz integer blocks with unknown values and occurances

Published on
#algorithm #function #graph-theory #set-theory
123
Views

How to define the boundary conditions of a rectangle being used in a quadtree to hold points in R^2

Published on
#c# #data-structures #boundary #quadtree #set-theory
117
Views

Sympy intersection of FiniteSets with strings

Published on
#python #set #sympy #set-theory
77
Views

Sympy Set Theory - How to reduce mathematical expressions?

Published on
#python #set #logic #sympy #set-theory
292
Views

Prove that if ϵ ∈ L1 then L2 ⊆ L2 • L1

Published on
#set #automata #formal-languages #set-theory
336
Views

How to simplify set expressions with union, intersection, and negation, in python

Published on
#python #sympy #set-theory
2.6k
Views

Is the empty string a subset or element of all alphabets?

Published on
#set #theory #set-theory
38
Views

Is it possible to explicitly and minimally index all integer solutions to x + y + z = 2n?

Published on
#sequence #combinatorics #number-theory #set-theory #integer-partition
237
Views

Dafny proof by contradiction with quantifiers

Published on
#proof #dafny #set-theory
70
Views

need SQL help in finding pairs of values that don't exist in a table

Published on
#sql #database #postgresql #psql #set-theory
88
Views

Addition of two sets... How to proceed

Published on
#python #set-theory
1k
Views

Typescript: Intersection - Confused about the naming

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#typescript #type-theory #set-theory
70
Views

How to print each possible permutation of several arrays of strings on Python?

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#python #arrays #permutation #set-theory

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