- 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
This commit is contained in:
LtWorf
2011-02-18 18:11:39 +00:00
parent 7ab6ed8ed7
commit 71697bb2e8
9 changed files with 37 additions and 2 deletions

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σ skill=='C'(skills) ᑎ σ id%2==0 (skills)