Support try_from_array and eq_array for ScalarValue::Union #12208
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Which issue does this PR close?
Part of #2326
Rationale for this change
Extending support for union types to primitive operations.
What changes are included in this PR?
Added support for
DataType::Union
toScalarValue::try_from_array
andScalarValue::eq_array
.Are these changes tested?
Added unit tests (we don't have slt tests yet, see #10161)
Are there any user-facing changes?
Not directly, but more functions will work on union types.