AssHero opened a new pull request, #2958:
URL: https://github.com/apache/arrow-datafusion/pull/2958
# Which issue does this PR close?
Closes #2957
# Rationale for this change
negate a Not clause
For BinaryExpr, use the negator of op instead.
not ( A > B) ===> (A <= B)
For BoolExpr, not (A and B) ===> (not A) or (not B)
not (A or B) ===> (not A) and (not B)
not (not A) ===> A
For NullExpr, not (A is not null) ===> A is null
not (A is null) ===> A is not null
For InList, not (A not in (..)) ===> A in (..)
not (A in (..)) ===> A not in (..)
For Between, not (A between B and C) ===> (A not between B and C)
not (A not between B and C) ===> (A between B and C)
For others, use Not clause
# What changes are included in this PR?
Add rules to simplify not clause in
datafusion/optimizer/src/simplify_expressions.rs
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