holicc commented on issue #13625:
URL: https://github.com/apache/datafusion/issues/13625#issuecomment-2513689911
@TheBuilderJR Cannot reproduce this problem on version 43.0.0. Maybe
something is missing here.
```rust
let df = ctx.sql("create table logs(timestamp varchar);").await?;
let df = ctx
.sql(r#"SELECT * FROM logs WHERE timestamp IS NOT NULL ORDER BY
timestamp DESC LIMIT 3"#)
.await?;
println!("{:?}",df.schema());
df.show().await?;
```
got results:
```text
DFSchema { inner: Schema { fields: [Field { name: "timestamp", data_type:
Utf8, nullable: true, dict_id: 0, dict_is_ordered: false, metadata: {} }],
metadata: {} }, field_qualifiers: [Some(Bare { table: "logs" })],
functional_dependencies: FunctionalDependencies { deps: [] } }
+-----------+
| timestamp |
+-----------+
```
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