jayzhan211 commented on code in PR #14812:
URL: https://github.com/apache/datafusion/pull/14812#discussion_r1969207266
##########
datafusion/sqllogictest/test_files/parquet.slt:
##########
@@ -619,13 +619,13 @@ query TT
explain select * from foo where starts_with(column1, 'f');
----
logical_plan
-01)Filter: foo.column1 LIKE Utf8View("f%")
-02)--TableScan: foo projection=[column1], partial_filters=[foo.column1 LIKE
Utf8View("f%")]
+01)Filter: CAST(foo.column1 AS Utf8) LIKE Utf8("f%")
Review Comment:
In this case, casting array is less efficient, since you only has 2
characters "f%" on right hand side.
Even more, instead of calling `make_scalar_function`, we can wrap scalar
case to arrow::Scalar and call
`arrow::compute::kernels::comparison::starts_with` directly.
It accepts Datum
```rust
pub fn starts_with(left: &dyn Datum, right: &dyn Datum) ->
Result<BooleanArray, ArrowError> {
like_op(Op::StartsWith, left, right)
}
```
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