wangyum opened a new pull request #32090:
URL: https://github.com/apache/spark/pull/32090
### What changes were proposed in this pull request?
This pr makes it support the data is written as integral type and read as
decimal type with 0 scala. For example:
```scala
import org.apache.spark.sql.types.StructType
spark.sql("SELECT 1L AS a").write.parquet("/tmp/SPARK-34212")
spark.read.schema(StructType.fromDDL("a decimal(18,
0)")).parquet("/tmp/SPARK-34212").show
```
### Why are the changes needed?
It is supported before SPARK-34212.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Unit test.
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