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relational/test/union_and_select.query

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- Implemented select_union_intersect_subtract general optimization - Added tests for the new optimization git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@268 014f5005-505e-4b48-8d0a-63407b615a7c
2011-02-18 18:11:39 +00:00
σ skill=='C'(skills) ᑎ σ id%2==0 (skills)
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