LuciferYang commented on code in PR #38865: URL: https://github.com/apache/spark/pull/38865#discussion_r1042145834
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala: ########## @@ -4600,3 +4600,133 @@ case class ArrayExcept(left: Expression, right: Expression) extends ArrayBinaryL override protected def withNewChildrenInternal( newLeft: Expression, newRight: Expression): ArrayExcept = copy(left = newLeft, right = newRight) } + +/** + * Given an array, and another element append the element at the end of the array. + */ +@ExpressionDescription( + usage = "_FUNC_(array, element) - Append the element", + examples = + """ + Examples: + > SELECT _FUNC_(array('b', 'd', 'c', 'a'), 'd'); + ["b","d","c","a","d"] + + """, + since = "3.4.0", + group = "array_funcs") +case class ArrayAppend(left: Expression, right: Expression) + extends BinaryExpression + with ImplicitCastInputTypes + with ComplexTypeMergingExpression + with QueryErrorsBase { + override def prettyName: String = "array_append" + + override def inputTypes: Seq[AbstractDataType] = { + (left.dataType, right.dataType) match { + case (ArrayType(e1, hasNull), e2) => + TypeCoercion.findTightestCommonType(e1, e2) match { + case Some(dt) => Seq(ArrayType(dt, hasNull), dt) + case _ => Seq.empty + } + case _ => Seq.empty + } + } + + override def eval(input: InternalRow): Any = { + val value1 = left.eval(input) + val value2 = right.eval(input) + if (value1 == null) { + null + } else { + nullSafeEval(value1, value2) + } + } + + override def checkInputDataTypes(): TypeCheckResult = { + (left.dataType, right.dataType) match { + case (ArrayType(e1, _), e2) => if (e1.sameType(e2)) { + TypeCheckResult.TypeCheckSuccess + } + else { + DataTypeMismatch( + errorSubClass = "ARRAY_FUNCTION_DIFF_TYPES", + messageParameters = Map( + "functionName" -> toSQLId(prettyName), + "leftType" -> toSQLType(left.dataType), + "rightType" -> toSQLType(right.dataType), + "dataType" -> toSQLType(ArrayType) + )) + } + case _ => + DataTypeMismatch( + errorSubClass = "UNEXPECTED_INPUT_TYPE", + messageParameters = Map( + "paramIndex" -> "0", + "requiredType" -> toSQLType(ArrayType), + "inputSql" -> toSQLExpr(left), + "inputType" -> toSQLType(left.dataType) + ) + ) + } + } + + protected def withNewChildrenInternal(newLeft: Expression, newRight: Expression): ArrayAppend = + copy(left = newLeft, right = newRight) + + override protected def nullSafeEval(input1: Any, input2: Any): Any = { + val arrayData = input1.asInstanceOf[ArrayData] + val arrayElementType = dataType.asInstanceOf[ArrayType].elementType + val elementData = input2 + val numberOfElements = arrayData.numElements() + 1 + if (numberOfElements > ByteArrayMethods.MAX_ROUNDED_ARRAY_LENGTH) { + throw QueryExecutionErrors.concatArraysWithElementsExceedLimitError(numberOfElements) + } + val finalData = new Array[Any](numberOfElements) + arrayData.foreach(arrayElementType, finalData.update) Review Comment: https://github.com/apache/spark/blob/1d2159f888139e65c80db2003d521b0f684df83a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/ArrayData.scala#L180-L189 ArrayData.foreach already use while loop -- 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. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org