comphead commented on issue #2793:
URL:
https://github.com/apache/datafusion-comet/issues/2793#issuecomment-3549329583
Repro
```
test("make decimal") {
withSQLConf(
CometConf.COMET_EXEC_ENABLED.key -> "true",
SQLConf.USE_V1_SOURCE_LIST.key -> "parquet",
CometConf.COMET_ENABLED.key -> "true",
CometConf.COMET_EXPLAIN_FALLBACK_ENABLED.key -> "true",
"spark.sql.ansi.enabled" -> "true",
"spark.comet.expression.Sum.allowIncompatible" -> "true",
CometConf.COMET_NATIVE_SCAN_IMPL.key -> "native_iceberg_compat",
"spark.sql.optimizer.excludedRules" ->
"org.apache.spark.sql.catalyst.optimizer.ConstantFolding") {
testSingleLineQuery(
"""
|select cast(123456 as decimal(6, 0)) a
|""".stripMargin,
"select sum(a) from tbl",
debugCometDF = df => df.explain("formatted"))
}
}
== Results ==
!== Correct Answer - 1 == == Spark Answer - 1 ==
struct<sum(a):decimal(16,0)> struct<sum(a):decimal(16,0)>
![123456] [null]
```
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