devinjdangelo commented on code in PR #9623:
URL: https://github.com/apache/arrow-datafusion/pull/9623#discussion_r1527526305
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datafusion/sql/src/unparser/expr.rs:
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@@ -151,6 +151,36 @@ impl Unparser<'_> {
order_by: vec![],
}))
}
+ Expr::ScalarSubquery(subq) => {
Review Comment:
If you look at `Unparser::select_to_sql_recursively`, we have not
implemented a match condition for `LogicalPlan::Subquery`. This node is never
actually encountered as I have not found a case where you can get to it via the
"input" of another node. We do encounter the Expr::ScalarSubquery expression
and we encode the information from the `LogicalPlan` found there instead.
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