Module expr::linear::util [−][src]
Functions
Given the permutations (see permutation_for_arrangement and
(dataflow::plan::AvailableCollections) corresponding to two
collections with the same key arity,
computes the permutation for the result of joining them.
Return the map associating columns in the logical,
unthinned representation of a collection to columns in the
thinned representation of the arrangement corresponding to key.