avantgardnerio commented on code in PR #2797:
URL: https://github.com/apache/arrow-datafusion/pull/2797#discussion_r910186338


##########
datafusion/optimizer/src/simplify_expressions.rs:
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@@ -1951,7 +1951,7 @@ mod tests {
         let date_plus_interval_expr = to_timestamp_expr(ts_string)
             .cast_to(&DataType::Date32, schema)
             .unwrap()
-            + Expr::Literal(ScalarValue::IntervalDayTime(Some(123)));

Review Comment:
   Based upon tests that used the parser to load "real" dates seemed to confirm 
the lower-order bytes are the `ms` part, so this was adding `123ms` which 
wasn't enough to bump the 32 bit date forward. Since the parser based tests are 
more likely to be correct than this hand-rolled one, I updated this to match 
that.



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