Question

我无法使用Athena查询结构中的字段。该表基于ORC文件。我想知道是什么原因。我正在尝试运行查询select name.first from string_structs并返回Queries of this type are not supported。

参见表DDL：

    CREATE EXTERNAL TABLE `string_structs`(
  `id` string, 
  `name` struct<first:string,last:string>)
ROW FORMAT SERDE 
  'org.apache.hadoop.hive.ql.io.orc.OrcSerde' 
STORED AS INPUTFORMAT 
  'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat' 
OUTPUTFORMAT 
  'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat'
LOCATION
  's3://...'
TBLPROPERTIES (
  'CrawlerSchemaDeserializerVersion'='1.0', 
  'CrawlerSchemaSerializerVersion'='1.0', 
  'UPDATED_BY_CRAWLER'='struct_string', 
  'averageRecordSize'='47', 
  'classification'='orc', 
  'compressionType'='none', 
  'objectCount'='1', 
  'recordCount'='1', 
  'sizeKey'='476', 
  'typeOfData'='file')

谢谢

雅典娜结构查询

0 个答案: