jayzhan211 commented on code in PR #12043:
URL: https://github.com/apache/datafusion/pull/12043#discussion_r1720766294
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datafusion/proto/tests/cases/roundtrip_logical_plan.rs:
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@@ -904,7 +904,7 @@ async fn roundtrip_expr_api() -> Result<()> {
vec![lit(1), lit(2), lit(3)],
vec![lit(10), lit(20), lit(30)],
),
- row_number(vec![col("a")]),
Review Comment:
If we did the signature check, this test should fail.
The reason why it is not is because we didn't do signature check for window
udf.
We have similar functions for scalar and udaf.
https://github.com/apache/datafusion/blob/cb1e3f0e5cfd04195ae0c933b74f3eb3fcbe1b45/datafusion/expr/src/type_coercion/functions.rs#L42-L96
`data_types_with_scalar_udf` and `data_types_with_aggregate_udf`.
After adding a new `data_types_with_window_udf` function, we should get the
failed msg for incorrect non-empty args for `row_number`
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