jayzhan211 commented on code in PR #13420:
URL: https://github.com/apache/datafusion/pull/13420#discussion_r1886769687
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datafusion/sqllogictest/test_files/scalar.slt:
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@@ -1864,10 +1864,10 @@ query TT
EXPLAIN SELECT letter, letter = LEFT(letter2, 1) FROM simple_string;
----
logical_plan
-01)Projection: simple_string.letter, simple_string.letter =
left(simple_string.letter2, Int64(1))
+01)Projection: simple_string.letter, simple_string.letter =
left(CAST(simple_string.letter2 AS Utf8View), Int64(1))
Review Comment:
It seems that iterating values in Dict is quite tricky
```rust
let test = vec!["a", "a", "b", "c"];
let array : DictionaryArray<Int32Type> = test.iter().map(|&x| if x
== "b" {None} else {Some(x)}).collect();
let typed = array.downcast_dict::<StringArray>().unwrap();
for v in typed {
println!("iter value in dict: {:?}", v);
}
```
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