MaxGekk commented on code in PR #50355:
URL: https://github.com/apache/spark/pull/50355#discussion_r2035305029
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/timeExpressions.scala:
##########
@@ -233,3 +233,60 @@ object MinuteExpressionBuilder extends ExpressionBuilder {
}
}
}
+
+case class HoursOfTime(child: Expression)
+ extends RuntimeReplaceable
+ with ExpectsInputTypes {
+
+ override def replacement: Expression = StaticInvoke(
+ classOf[DateTimeUtils.type],
+ IntegerType,
+ "getHoursOfTime",
+ Seq(child),
+ Seq(child.dataType)
+ )
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(TimeType())
Review Comment:
@senthh Could you open a follow up PR and allow any valid precision of the
TIME type other it fails now with the error:
```sql
spark-sql (default)> select hour(cast('12:30' as time(0)));
[DATATYPE_MISMATCH.UNEXPECTED_INPUT_TYPE] Cannot resolve "hour(CAST(12:30 AS
TIME(0)))" due to data type mismatch: The first parameter requires the
"TIME(6)" type, however "CAST(12:30 AS TIME(0))" has the type "TIME(0)".
SQLSTATE: 42K09; line 1 pos 7;
```
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