JingsongLi commented on a change in pull request #8898:
[FLINK-12936][table-planner-blink] Support intersect all / minus all to blink
planner
URL: https://github.com/apache/flink/pull/8898#discussion_r298017260
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/plan/rules/logical/ReplaceSetOpWithJoinRuleBase.scala
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@@ -55,4 +71,47 @@ abstract class ReplaceSetOpWithJoinRuleBase[T <: SetOp](
}
conditions
}
+
+ protected def replicateRows(
+ builder: RelBuilder, outputType: RelDataType, fields:
util.List[Integer]): RelNode = {
+ // construct LogicalTableFunctionScan
+ val logicalType = toLogicalRowType(outputType)
+ val fieldNames = outputType.getFieldNames.toSeq.toArray
+ val fieldTypes = toLogicalRowType(outputType)
+ .getChildren.map(fromLogicalTypeToTypeInfo).toArray
+ val tf = new ReplicateRows(fieldTypes)
+ val resultType = fromLegacyInfoToDataType(new RowTypeInfo(fieldTypes,
fieldNames))
+ val function = new TypedFlinkTableFunction(tf, resultType)
+ val typeFactory = builder.getTypeFactory.asInstanceOf[FlinkTypeFactory]
+ val sqlFunction = new TableSqlFunction(
+ tf.functionIdentifier,
+ tf.toString,
+ tf,
+ resultType,
+ typeFactory,
+ function)
+
+ val scan = LogicalTableFunctionScan.create(
+ builder.peek().getCluster,
+ new util.ArrayList[RelNode](),
+ builder.call(
+ sqlFunction,
+ builder.fields(Util.range(fields.size() + 1))),
+ function.getElementType(null),
+ UserDefinedFunctionUtils.buildRelDataType(
+ builder.getTypeFactory,
+ logicalType,
+ fieldNames,
+ fieldNames.indices.toArray),
+ null)
+ builder.push(scan)
+
+ // join
Review comment:
actually it is correlated join
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