jayzhan211 commented on code in PR #10044:
URL:
https://github.com/apache/arrow-datafusion/pull/10044#discussion_r1563857583
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datafusion/expr/src/expr.rs:
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@@ -186,7 +186,16 @@ pub enum Expr {
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
pub struct Unnest {
- pub exprs: Vec<Expr>,
+ pub expr: Box<Expr>,
Review Comment:
https://www.postgresql.org/docs/current/functions-array.html
It was Vec since there are multi-columns in postgres.
`select * from unnest(ARRAY[1,2], ARRAY['foo','bar','baz']) as x(a,b) →`
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