PARTITIONED BY ( `day` string,`type` tinyint COMMENT '0 as bid, 1 as win, 2 as ck', `hour` tinyint) ROW FORMAT DELIMITED NULL DEFINED AS '' STORED AS TEXTFILE; 1. 2. 3. 4. 5. 2)修改已存在的表: alter table hive_tb set serdeproperties('serialization.null.format' = '');...
同时,将ORC的表中的NULL取值,由默认的\N改为”, ORC三种创建/使用方式: 1. STORED AS ORC; 2.ROW FORMAT SERDE ‘org.apache.hadoop.hive.ql.io.orc.OrcSerde’ with serdeproperties(‘serialization.null.format’ = ”) STORED AS ORC; 3,.ROW FORMAT DELIMITED NULL DEFINED AS ” STORED AS ORC;...
1 可以通过建表语句中指定Hive保存和标识NULL,也可以通过alter修改已存在的表,建表指定方式如下: create table test_null_1 (id int, age string) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n' NULL DEFINED AS'' STORED AS TEXTFILE; 2在Hive中是通过serialization.null.format...
[NULL DEFINED AS char] 注: Ø fields terminated by :列分隔符 Ø collection items terminated by : map、struct和array中每个元素之间的分隔符 Ø map keys terminated by :map中的key与value的分隔符 Ø lines terminated by :行分隔符 语法二:SERDE关键字可用于指定其他内置的SERDE或者用户自定义的...
(Note:AvailableinHive0.7.0and later)row_format:DELIMITED[FIELDSTERMINATEDBYchar[ESCAPEDBYchar]][COLLECTIONITEMSTERMINATEDBYchar][MAPKEYSTERMINATEDBYchar][LINESTERMINATEDBYchar][NULLDEFINEDASchar]--(Note:AvailableinHive0.13and later)|SERDEserde_name[WITHSERDEPROPERTIES(property_name=property_value,property...
FIELDS TERMINATEDBY','LINES TERMINATEDBY'\n'NULLDEFINEDAS''STOREDASTEXTFILE TBLPROPERTIES ("serialization.null.format" =''); 覆盖写入新数据如下: insertoverwritetabletest_db.table_Bvalues(1,'1',10.1), (2,'2',20.1), (2,'2',20.2), ...
‘serialization.null.format'='' ) STORED AS TEXTFILE; b、或者通过ROWFORMAT DELIMITEDNULLDEFINEDAS''如 CREATETABLEhive_tb (idint,name STRING) PARTITIONEDBY( `day` string,`type` tinyint COMMENT'0 as bid, 1 as win, 2 as ck', `hour` tinyint)ROWFORMAT DELIMITEDNULLDEFINEDAS''STOREDASTEXT...
(`c1`stringCOMMENT'c1的注释',`c2`stringCOMMENT'c2的注释',`c3`stringCOMMENT'c3的注释',`c4`double COMMENT'c4的注释',`c5`bigint COMMENT'c5的注释')COMMENT'测试表'PARTITIONED BY (`dt`string)ROW FORMAT DELIMITEDFIELDS TERMINATED BY','-- 逗号...
ROW FORMAT DELIMITEDNULL DEFINED AS''STORED AS TEXTFILE; 如: create table vip_info( id string, mobile string)row format delimited fields terminated by '\t'NULL DEFINED AS ''stored as textfile; 解决方式3: insert overwrite directory'hive_test/vip'ROW FORMAT SERDE'org.apache.hadoop.hive.ser...
> -- (Note: Available in Hive 0.7.0 and later) 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] -- (Note: Available in Hive 0.13 and later) |...