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relational/tests_dir/union_not_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 12:11:39 +07:00
σ skill=='C' (skills) - σ id%2==0(skills)