Ngone51 commented on a change in pull request #26472: [SPARK-29838][SQL]
PostgreSQL dialect: cast to timestamp
URL: https://github.com/apache/spark/pull/26472#discussion_r348887939
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/postgreSQL/PostgreCastBase.scala
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@@ -68,16 +91,47 @@ case class PostgreCastToBoolean(child: Expression,
timeZoneId: Option[String])
throw new IllegalArgumentException("invalid input syntax for type
boolean: $c");
}
"""
-
case IntegerType =>
super.castToBooleanCode(from)
}
+}
- override def dataType: DataType = BooleanType
+case class PostgreCastToTimestamp(child: Expression, timeZoneId:
Option[String])
Review comment:
I think we can and should combine them into a single one(both rule and
expression) when more types get in. Just like the original `Cast` does. But I'm
not sure where shall we start. Maybe, this one ?
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