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New query optimization

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A * B ∪ A * C = A * (B ∪ C)
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Salvo 'LtWorf' Tomaselli
2015-12-31 14:26:28 +01:00
parent 5c2ff5f844
commit 950a2273c3
4 changed files with 47 additions and 1 deletions
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test/union_join.query Normal file
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people⋈σ skill == 'Perl' (skills) ∪ (people⋈σ skill == 'C' (skills))