Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/19730#discussion_r150609735
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
---
@@ -1039,13 +1039,19 @@ case class Cast(child: Expression, dataType:
DataType, timeZoneId: Option[String
}
}
"""
- }.mkString("\n")
+ }
+ val fieldsEvalCodes = if (ctx.INPUT_ROW != null && ctx.currentVars ==
null) {
--- End diff --
If [`ctx.currentVars !=
null`](https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala#L768),
we need to use `mkString("\n")`.
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