turboFei commented on a change in pull request #26485: [SPARK-29860][SQL] Fix
dataType mismatch issue for InSubquery.
URL: https://github.com/apache/spark/pull/26485#discussion_r346102117
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala
##########
@@ -93,6 +93,14 @@ object TypeCoercion {
Some(t2)
case (t1: DecimalType, t2: IntegralType) if t1.isWiderThan(t2) =>
Some(t1)
+ case (t1: DecimalType, t2: DecimalType) =>
+ // Handle two decimal type here and don't allow precision loss.
+ val widerType = DecimalPrecision.widerDecimalType(t1, t2)
+ if (widerType.isWiderThan(t1) && widerType.isWiderThan(t2)) {
+ Some(widerType)
+ } else {
+ None
+ }
Review comment:
I think for two decimalType, such as Decimal(3,0) and Decimal(3,2), their
tightest common type should be Decimal(5,2), which is consistent with the
method name findTightestCommonType.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
