CREATE [EXTERNAL] TABLE table_name(col1 type [, col2 type ...])[PARTITIONED BY ...]CLUSTERED BY (...)[SORTED BY (...)]INTO num_buckets BUCKETS [ROW FORMAT row_format]
createtableods_user_bucket_log(idint,namestring,citystring,phonestring,acctimestring)CLUSTEREDBY(`id`)INTO5BUCKETSrowformatdelimitedfieldsterminatedby'\t'storedastextfile;insertoverwritetableods_user_bucket_logselect*fromods_user_log; order by rand() order by只会启用一个reduce所以比较耗时,至于为什么...
[PARTITIONED BY [RANGE] (<partition_key> <data_type> [COMMENT '<partition_comment>'] [, <partition_key > <data_type>...])] [CLUSTERED BY (<col_name> [, <col_name>...]) [SORTED BY (<col_name> [ASC|DESC] [, <col_name> [ASC|DESC]...])] INTO <num_buckets> BUCKETS] [...
• ALTER TABLE tableName SET FILEFORMAT file_format • ALTER TABLE tableName CLUSTERED BY(userid) SORTED BY(viewTime) INTO num_buckets BUCKETS 这个命令修改了表的物理存储属性 增加表的元数据信息: ALTER TABLE tableName SET TBLPROPERTIES [property_name = property_value…..] 用户可以用这个命令向...
hive(default)> create table if not exists location(loc int,loc_name string) row format delimited fields terminated by '\t'; -- 加载数据 hive(default)> load data local inpath '/usr/local/hive-3.1.2/test_files/location.txt' into table location; ...
] [CLUSTERED BY (col_name, col_name, ...) [SORTED BY (col_name [ASC|DESC], ...)] INTO num_buckets BUCKETS] [ROW FORMAT row_format] [STORED AS file_format] [LOCATION hdfs_path] 字段解释说明: - CREATE TABLE 创建一个指定名字的表。如果相同名字的表已经存在,则抛出异常;用户可以用 IF...
CREATETABLEIFNOTEXISTSperson_bkt(idint,name string,country string,dt string)CLUSTEREDBY(country)SORTEDBY(id)INTO4BUCKETS STOREDASTEXTFILE; 创建桶时以CLUSTERED BY 子句指定字段,多个字段以逗号分隔;SORTED BY子句指定桶里的数据以哪个字段排序,默认为升序;INTO 指定分多少个桶。
create table t_all_hero( 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 ) row format delimited fields terminated by "\t"; 加载数据文件到HDFS指定路径下: ...
CREATE TABLE table_name ( id int, name string ) CLUSTERED BY (id) INTO 2 BUCKETS STORED AS ORC TBLPROPERTIES ("transactional"="true", "compactor.mapreduce.map.memory.mb"="2048", -- 指定紧缩map作业的属性 "compactorthreshold.hive.compactor.delta.num.threshold"="4", -- 如果有超过4个增量...
create tablebusiness(name string,orderdate string,cost int)ROWFORMATDELIMITEDFIELDSTERMINATEDBY',';load data local inpath"/opt/module/datas/business.txt"into table business; 2.2 用法 相关函数说明 OVER():指定分析函数工作的数据窗口大小,这个数据窗口大小可能会随着行的变而变化 ...