Question

我有一个csv文件，其中包含以下格式的数据：

"SomeName1",25,"SomeString1"
"SomeName2",26,"SomeString2"
"SomeName3",27,"SomeString3"

我正在将此CSV加载到配置单元表中。在表格中，第1列和第3列与我不想要的引号一起插入。我希望第1列为SomeName1，第3列为SomeString1

我试过

WITH SERDEPROPERTIES (
   "separatorChar" = "\t",
   "quoteChar"     = "\""
)

但它不起作用并保留＆＃34;＆＃34;。

这里的方法应该是什么？

表创建声明：

CREATE TABLE `abcdefgh`(
  `name` string COMMENT 'from deserializer',
  `age` string COMMENT 'from deserializer',
  `value` string COMMENT 'from deserializer')
ROW FORMAT SERDE
  'org.apache.hadoop.hive.serde2.OpenCSVSerde'
WITH SERDEPROPERTIES (
  'quoteChar'='\"',
  'separatorChar'='\t')
STORED AS INPUTFORMAT
  'org.apache.hadoop.mapred.TextInputFormat'
OUTPUTFORMAT
  'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
LOCATION
  'hdfs://a-b-c-d-e:9000/user/hive/warehouse/abcdefgh'
TBLPROPERTIES (
  'numFiles'='1',
  'numRows'='0',
  'rawDataSize'='0',
  'totalSize'='3134916',
  'transient_lastDdlTime'='1490713221')

Answer 1

您的分隔符应为逗号："separatorChar" = ','

create external table mytable 
(
    col1 string
   ,col2 int
   ,col3 string
)
row format serde 'org.apache.hadoop.hive.serde2.OpenCSVSerde'
with serdeproperties 
(
    "separatorChar" = ','
   ,"quoteChar"     = '"'
)  
stored as textfile
;

select * from mytable
;

+--------------+--------------+--------------+
| mytable.col1 | mytable.col2 | mytable.col3 |
+--------------+--------------+--------------+
| SomeName1    |           25 | SomeString1  |
| SomeName2    |           26 | SomeString2  |
| SomeName3    |           27 | SomeString3  |
+--------------+--------------+--------------+

将CSV文件加载到HIVE表时忽略CSV文件中的引号

1 个答案: