Dandandan opened a new pull request #225:
URL: https://github.com/apache/arrow-datafusion/pull/225
# Which issue does this PR close?
Closes #220
# Rationale for this change
DataFusion gives wrong results for filters that don't reference any column
# What changes are included in this PR?
Workarounds the issue by not pushing down predicates that do not reference
any column (1=2, FALSE, TRUE).
As we should be able to remove these anyway with constant folding and
removing/replacing `WHERE FALSE`/ `WHERE TRUE`, I think this is a good option.
# Are there any user-facing changes?
No, results should be correct now.
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