izveigor commented on code in PR #7313:
URL: https://github.com/apache/arrow-datafusion/pull/7313#discussion_r1297406740
##########
datafusion/expr/src/built_in_function.rs:
##########
@@ -548,6 +551,7 @@ impl BuiltinScalarFunction {
"The {self} function can only accept list as the first
argument"
),
},
+ BuiltinScalarFunction::ArrayEmpty => Ok(UInt8),
Review Comment:
The function can return only 2 values (`0` and `1`), so it is reasonable to
use `Boolean` instead of `UInt8`
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