Yin Huai created SPARK-12373:
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Summary: Type coercion rule for dividing two decimal values may
choose an intermediate precision that does not enough number of digits at the
left of decimal point
Key: SPARK-12373
URL: https://issues.apache.org/jira/browse/SPARK-12373
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Yin Huai
Looks like the {{widerDecimalType}} at
https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/HiveTypeCoercion.scala#L432
can produce something like {{(38, 38)}} when we have have two operand types
{{Decimal(38, 0)}} and {{Decimal(38, 38)}}. We should take a look at if there
is more reasonable way to handle precision/scale.
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