mihailotim-db commented on code in PR #50590:
URL: https://github.com/apache/spark/pull/50590#discussion_r2055967354
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeExtractors.scala:
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@@ -314,6 +315,30 @@ case class GetArrayItem(
})
}
+ override def checkInputDataTypes(): TypeCheckResult = {
+ (left.dataType, right.dataType) match {
+ case (_: ArrayType, e2) if !e2.isInstanceOf[IntegralType] =>
+ DataTypeMismatch(
+ errorSubClass = "UNEXPECTED_INPUT_TYPE",
+ messageParameters = Map(
+ "paramIndex" -> ordinalNumber(1),
+ "requiredType" -> toSQLType(IntegerType),
+ "inputSql" -> toSQLExpr(right),
+ "inputType" -> toSQLType(right.dataType))
+ )
+ case (e1, _) if (!e1.isInstanceOf[ArrayType]) =>
Review Comment:
In that case we shouldn't suggest it in error message here:
https://github.com/apache/spark/pull/50590/files#diff-85360f5a564bdbada5a1687b7bc1dbfe1df6a1470897db13fb31f3bda9ccfc27R334
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