数据湖探索 DLI-Hive源表:语法格式

时间：2024-04-23 20:19:33

数据湖探索 DLI Hive

语法格式

  
   
     
     
       CREATE EXTERNAL TABLE [IF NOT EXISTS] table_name
  [(col_name data_type [column_constraint] [COMMENT col_comment], ... [table_constraint])]
  [COMMENT table_comment]
  [PARTITIONED BY (col_name data_type [COMMENT col_comment], ...)]
  [
    [ROW FORMAT row_format]
    [STORED AS file_format]
  ]
  [LOCATION obs_path]
  [TBLPROPERTIES (property_name=property_value, ...)]

row_format:
  : DELIMITED [FIELDS TERMINATED BY char [ESCAPED BY char]] [COLLECTION ITEMS TERMINATED BY char]
      [MAP KEYS TERMINATED BY char] [LINES TERMINATED BY char]
      [NULL DEFINED AS char]
  | SERDE serde_name [WITH SERDEPROPERTIES (property_name=property_value, ...)]

file_format:
  : SEQUENCEFILE
  | TEXTFILE
  | RCFILE
  | ORC
  | PARQUET
  | AVRO
  | INPUTFORMAT input_format_classname OUTPUTFORMAT output_format_classname

column_constraint:
  : NOT NULL [[ENABLE|DISABLE] [VALIDATE|NOVALIDATE] [RELY|NORELY]]

table_constraint:
  : [CONSTRAINT constraint_name] PRIMARY KEY (col_name, ...) [[ENABLE|DISABLE] [VALIDATE|NOVALIDATE] [RELY|NORELY]]

      

    

  
 