CREATE [EXTERNAL] TABLE <table_name> (<col_name> <data_type>, <col_name> <data_type>, ...) PARTITIONED BY RANGE (<partition_key> <data_type>, ...) (PARTITION [<partition_name>] VALUES LESS THAN (<cutoff>), [PARTITION [<partition_name>] VALUES LESS THAN (<cutoff>), ... ]...
因此需要考虑创建分区视图(partitioned view),我使用的hive版本为hive2.3.3。 外部表和内部表测试均可,这里仅演示内部表。 创建分区视图 # 先创建表CREATETABLEifnot exists kantlin(idint,namestring,ageint)PARTITIONEDBY(date_idstring)row format delimited fields terminated by','storedastextfile;#插入两条相...
PARTITIONED BY(dt STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' STORED AS TEXTFILE; 创建外部表 如果数据已经存在HDFS的'/user/hadoop/warehouse/page_view'上了,如果想创建表,指向这个路径,就需要创建外部表: CREATE EXTERNAL TABLE page_view( viewTime INT, userid BIGINT, page_url STRING, ...
ALTER TABLE employee_partitioned ADD PARTITION (year=2019,month=3) PARTITION (year=2019,month=4); ALTER TABLE employee_partitioned DROP PARTITION (year=2019, month=4); 1. 2. 3. 动态分区 set hive.exec.dynamic.partition=true; --允许动态分区 set hive.exec.dynamic.partition.mode=nonstrict; ...
在Hive 中可以使用PARTITIONED BY子句创建分区表。表可以包含一个或多个分区列,程序会为分区列中的每个不同值组合创建单独的数据目录。下面的我们创建一张雇员表作为测试: CREATE EXTERNAL TABLE emp_partition( empno INT, ename STRING, job STRING,
1、使用create命令创建一个新表,带分区 CREATE TABLE `mydb.dept`( `dept_no` int, `addr` string, `tel` string) partitioned by(date string ) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' ; 可以使用describe formatted mytest_deptaddr 查看建表相关的各种配置属性以及默认属性。从下面可以看出,在创...
# 创建一张新的分区表t_all_hero_part_dynamic create table t_all_hero_part_dynamic( id int, name string, hp_max int, mp_max int, attack_max int, defense_max int, attack_range string, role_main string, role_assist string ) partitioned by (role string) row format delimited fields termi...
CREATE [TEMPORARY] [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name LIKE existing_table_or_view_name [LOCATION hdfs_path]; data_type : primitive_type | array_type | map_type | struct_type | union_type -- (Note: Available in Hive 0.7.0 and later) ...
`CREATE [TEMPORARY] [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name` `LIKE existing_table_or_view_name` `[LOCATION hdfs_path];` `data_type` `: primitive_type` `| array_type` `| map_type` `| struct_type` `| union_type -- (Note: Available in Hive``0.7``.``0``and ...
CREATE [TEMPORARY] [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name --表名 [(col_name data_type [COMMENT col_comment], ... [constraint_specification])] --列名 列数据类型 [COMMENT table_comment] --表描述 [PARTITIONED BY (col_name data_type [COMMENT col_comment], ...)] --...