hadoop - 如何获取现有的Hive表定界符

有什么办法可以知道存储的配置单元表定界符吗？我尝试了Describe扩展，但没有用。.我已经搜索了很多，但尚未获得答案。

最佳答案

我通过使用describe extended table命令看到

例子:

hive> create table difdelimiter (id int, name string)
      row format delimited
      fields terminated by ',';

hive> describe extended difdelimiter;
OK id                   int
   name                 string
   Detailed Table Information   Table(tableName:difdelimiter, dbName:default, owner:cloudera, createTime:1439375349, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:id, type:int, comment:null), FieldSchema(name:name, type:string, comment:null)], location:hdfs://quickstart.cloudera:8020/user/hive/warehouse/difdelimiter, inputFormat:org.apache.hadoop.mapred.TextInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe, parameters:{serialization.format=,, field.delim=,}), bucketCols:[], sortCols:[], parameters:{}, skewedInfo:SkewedInfo(skewedColNames:[], skewedColValues:[], skewedColValueLocationMaps:{}), storedAsSubDirectories:false), partitionKeys:[], parameters:{transient_lastDdlTime=1439375349}, viewOriginalText:null, viewExpandedText:null, tableType:MANAGED_TABLE)  Time taken: 0.154 seconds, Fetched: 4 row(s)

这是有关定界符的信息

parameters:{serialization.format=,, field.delim=,}

根据评论添加

hive> create table tb3 (id int, name string) row format delimited fields terminated by '/t';
OK
Time taken: 0.09 seconds
hive> describe extended tb3;
OK
id                      int
name                    string

Detailed Table Information  Table(tableName:tb3, dbName:default, owner:cloudera, createTime:1439377591, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:id, type:int, comment:null), FieldSchema(name:name, type:string, comment:null)], location:hdfs://quickstart.cloudera:8020/user/hive/warehouse/tb3, inputFormat:org.apache.hadoop.mapred.TextInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe, parameters:{serialization.format=/t, field.delim=/t}), bucketCols:[], sortCols:[], parameters:{}, skewedInfo:SkewedInfo(skewedColNames:[], skewedColValues:[], skewedColValueLocationMaps:{}), storedAsSubDirectories:false), partitionKeys:[], parameters:{transient_lastDdlTime=1439377591}, viewOriginalText:null, viewExpandedText:null, tableType:MANAGED_TABLE)
Time taken: 0.125 seconds, Fetched: 4 row(s)

parameters:{serialization.format=/t, field.delim=/t})