KurtYoung commented on a change in pull request #8179: [FLINK-12200] [Table
API] Support UNNEST for MAP types
URL: https://github.com/apache/flink/pull/8179#discussion_r277284544
##########
File path:
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/plan/rules/logical/LogicalUnnestRule.scala
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@@ -94,6 +95,17 @@ class LogicalUnnestRule(
case arrayType: ArrayRelDataType =>
(arrayType.getComponentType,
ExplodeFunctionUtil.explodeTableFuncFromType(arrayType.typeInfo))
+
+ case map: MapRelDataType =>
+ val keyTypeInfo = FlinkTypeFactory.toTypeInfo(map.keyType)
+ val valueTypeInfo = FlinkTypeFactory.toTypeInfo(map.valueType)
+ val componentTypeInfo =
createTuple2TypeInformation(keyTypeInfo,valueTypeInfo)
Review comment:
Is it more appropriate for us to return RowType here?
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