andygrove commented on a change in pull request #8815:
URL: https://github.com/apache/arrow/pull/8815#discussion_r533820801
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File path: rust/datafusion/src/sql/planner.rs
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@@ -638,10 +638,13 @@ impl<'a, S: SchemaProvider> SqlToRel<'a, S> {
Ok(Expr::IsNotNull(Box::new(self.sql_to_rex(expr, schema)?)))
}
- SQLExpr::UnaryOp { ref op, ref expr } => match *op {
- UnaryOperator::Not => {
+ SQLExpr::UnaryOp { ref op, ref expr } => match (op, expr) {
+ (UnaryOperator::Not, _) => {
Ok(Expr::Not(Box::new(self.sql_to_rex(expr, schema)?)))
- }
+ },
+ (UnaryOperator::Minus, box SQLExpr::Value(Value::Number(n))) =>
+ // Parse negative numbers properly
+ Ok(lit(-n.parse::<f64>().unwrap())),
Review comment:
`n` could be an i64 or f64. You could maybe recursively call sql_to_rex
to parse the `Value::Number` here.
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