Commit 2119cc0

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Further improvements in cnfify: reduce amount of self-recursion

in or_normalize, remove detection of duplicate subexpressions (since it's highly unlikely to be worth the amount of time it takes), and introduce a dnfify() entry point so that unintelligible backwards logic in UNION processing can be eliminated. This is just an intermediate step --- next thing is to look at not forcing the qual into CNF form when it would be better off in DNF form.

1 parent 4644fc8 commit 2119cc0Copy full SHA for 2119cc0

2 files changed

+384

-334

lines changed

src
- backend/optimizer/prep
  - prepqual.c
- include/optimizer
  - prep.h

2 files changed

+384

-334

lines changed

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