alamb commented on a change in pull request #8460:
URL: https://github.com/apache/arrow/pull/8460#discussion_r504735006
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File path: rust/datafusion/src/physical_plan/expressions.rs
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@@ -1985,9 +1982,10 @@ mod tests {
#[test]
fn invalid_cast() -> Result<()> {
- let schema = Schema::new(vec![Field::new("a", DataType::Utf8, false)]);
- let result = cast(col("a"), &schema, DataType::Int32);
- result.expect_err("Invalid CAST from Utf8 to Int32");
+ // Ensure a useful error happens at plan time if invalid casts are used
Review comment:
It turns out that arrow can, in fact, cast from utf8 -> Int32
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