andygrove opened a new issue, #1750:
URL: https://github.com/apache/datafusion-comet/issues/1750
### Describe the bug
`native_datafusion` produces incorrect results when reading Parquet for
columns that contain null and have a default value assigned.
### Steps to reproduce
Add this test to `CometExpressionSuite`:
```scala
test("parquet default values") {
withTable("t1") {
sql(s"create table t1(col1 boolean) using parquet")
sql(s"insert into t1 values(true)")
sql(s"alter table t1 add column col2 string default 'hello'")
checkSparkAnswerAndOperator("select * from t1")
}
}
```
Results:
```
!== Correct Answer - 1 == == Spark Answer - 1 ==
struct<col1:boolean,col2:string> struct<col1:boolean,col2:string>
![true,hello] [true,null]
```
### Expected behavior
_No response_
### Additional context
_No response_
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