andygrove opened a new issue, #664:
URL: https://github.com/apache/datafusion-comet/issues/664
### Describe the bug
## SQL
```
SELECT c14, Signum(c14) AS x FROM test1 ORDER BY c14;
```
### Spark Plan
```
AdaptiveSparkPlan isFinalPlan=true
+- == Final Plan ==
*(2) Sort [c14#214 ASC NULLS FIRST], true, 0
+- AQEShuffleRead coalesced
+- ShuffleQueryStage 0
+- Exchange rangepartitioning(c14#214 ASC NULLS FIRST, 200),
ENSURE_REQUIREMENTS, [plan_id=26265]
+- *(1) Project [c14#214, SIGNUM(cast(c14#214 as double)) AS
x#27880]
+- *(1) ColumnarToRow
+- FileScan parquet [c14#214] Batched: true, DataFilters:
[], Format: Parquet, Location: InMemoryFileIndex(1
paths)[file:/home/andy/git/apache/datafusion-comet/fuzz-testing/test1.parquet],
PartitionFilters: [], PushedFilters: [], ReadSchema: struct<c14:int>
+- == Initial Plan ==
Sort [c14#214 ASC NULLS FIRST], true, 0
+- Exchange rangepartitioning(c14#214 ASC NULLS FIRST, 200),
ENSURE_REQUIREMENTS, [plan_id=26251]
+- Project [c14#214, SIGNUM(cast(c14#214 as double)) AS x#27880]
+- FileScan parquet [c14#214] Batched: true, DataFilters: [],
Format: Parquet, Location: InMemoryFileIndex(1
paths)[file:/home/andy/git/apache/datafusion-comet/fuzz-testing/test1.parquet],
PartitionFilters: [], PushedFilters: [], ReadSchema: struct<c14:int>
```
### Comet Plan
```
AdaptiveSparkPlan isFinalPlan=true
+- == Final Plan ==
*(2) Sort [c14#214 ASC NULLS FIRST], true, 0
+- AQEShuffleRead coalesced
+- ShuffleQueryStage 0
+- Exchange rangepartitioning(c14#214 ASC NULLS FIRST, 200),
ENSURE_REQUIREMENTS, [plan_id=26330]
+- *(1) ColumnarToRow
+- CometProject [c14#214, x#27886], [c14#214,
SIGNUM(cast(c14#214 as double)) AS x#27886]
+- CometScan parquet [c14#214] Batched: true, DataFilters:
[], Format: CometParquet, Location: InMemoryFileIndex(1
paths)[file:/home/andy/git/apache/datafusion-comet/fuzz-testing/test1.parquet],
PartitionFilters: [], PushedFilters: [], ReadSchema: struct<c14:int>
+- == Initial Plan ==
Sort [c14#214 ASC NULLS FIRST], true, 0
+- Exchange rangepartitioning(c14#214 ASC NULLS FIRST, 200),
ENSURE_REQUIREMENTS, [plan_id=26310]
+- CometProject [c14#214, x#27886], [c14#214, SIGNUM(cast(c14#214 as
double)) AS x#27886]
+- CometScan parquet [c14#214] Batched: true, DataFilters: [],
Format: CometParquet, Location: InMemoryFileIndex(1
paths)[file:/home/andy/git/apache/datafusion-comet/fuzz-testing/test1.parquet],
PartitionFilters: [], PushedFilters: [], ReadSchema: struct<c14:int>
```
First difference at row 102:
Spark: `0,0.0`
Comet: `0,1.0`
### Steps to reproduce
_No response_
### Expected behavior
_No response_
### Additional context
_No response_
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