findepi commented on code in PR #12178:
URL: https://github.com/apache/datafusion/pull/12178#discussion_r1731486232
##########
datafusion/proto/src/logical_plan/from_proto.rs:
##########
@@ -586,7 +586,10 @@ pub fn parse_expr(
parse_exprs(&pb.args, registry, codec)?,
pb.distinct,
parse_optional_expr(pb.filter.as_deref(), registry,
codec)?.map(Box::new),
- parse_vec_expr(&pb.order_by, registry, codec)?,
+ match pb.order_by.len() {
+ 0 => None,
+ _ => Some(parse_exprs(&pb.order_by, registry, codec)?),
+ },
Review Comment:
this pattern is already used here
https://github.com/apache/datafusion/blob/117ab1b8c861f431b2d04443e2028ca16fafc57c/datafusion/proto/src/logical_plan/mod.rs#L817-L819
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