node1:9092,node2:9092','properties.group.id'='testGroup','scan.startup.mode'='earliest-offset',-- 读取所有的数据'format'='csv','csv.field-delimiter'='\t')-- HOP: 滑动窗口函数,需要指定窗口大小和滑动时间-- 输入一条数据会输出多条数据withtempas(select*fromwords_window/*+ OPTIONS('...
into table tablename partition(分区字段1='分区值1', 分区字段2='分区值2'...); 1. 2. 直接将文件数据导入到分区表。其实就是将文件导入对应的文件夹下 例子: load data local inpath '/root/hivedata/archer.txt' into table t_all_hero_part partition(role='sheshou'); load data local inpath '...
分组的前10名查询。使用partition分区再排序 with a as( select x1,x2,x3 from a where log_date = 20210128 ),b as ( select row_number() over ( partition by x1 order by x2 desc )as num , * from a ) select…
第一步,设置好分组的编号 SELECT ROW_NUMBER() OVER(PARTITION BY name ORDER BY title) AS no, name, title FROM TestTitle ORDER BY name, title no name title --- --- --- 1李四 系统分析员 2李四 项目经理 1张三 程序员 2张三 网络管理员 3张三 系统管理员 1. 2. 3. 4. 5. 6. 7. 8...
支持SELECT INTO 二维数组功能 ECOB 支持通过 SELECT...INTO 将SQL 查询结果存储到二维数组。 示例语句如下所示: EXEC SQL create table t1(id number not null primary key , name varchar2(50) not null, unique (name)) partition by hash(id) partitions 8; //arr_id 一维数组 int arr_id[2]; EXE...
WITH added_row_number AS ( SELECT files_id_files, DownloadDate, ROW_NUMBER() OVER(PARTITION BY files_id_files ORDER BY id_downloadInfo ASC) as newest FROM downloadinfo ) SELECT * FROM added_row_number WHERE newest = 1; 它会产生我想要的确切结果,即最新或最新的下载时间。
WITH grouped_scores AS ( SELECT team, player_name, -- 按球队和球员分区的时间排序行号 ROW_NUMBER() OVER (PARTITION BY team, player_name ORDER BY get_score_time) AS rn, -- 按球队分区的时间排序行号 ROW_NUMBER() OVER (PARTITION BY team ORDER BY get_score_time) AS team_rn,...
selectid,name,subject,score,row_number()over(partitionbysubjectorderbyscoredesc) rnfromstudent_score; 三、总结分组、分区的区别 例如按学科分组或按学科分区,那么,分组得到的是一个列值(一条记录数据)的结果,分区是多个列值(多条记录数据)的结果。
alter table list_part_tab exchange partition p1 with table range_part_tab including indexs update global indexs; 五、分区相关查询 分区相关查询 (1)查询数据库所有分区表的信息 代码语言:javascript 代码运行次数:0 运行 AI代码解释 select * from DBA_PART_TABLES (2)查询分区表类型、是否有子分区,分区...
select id,name,lag(name,1,0) over(order by id) from kkk; 例子:select ename,deptno,sal,sum(sal) over(partition by deptno order by ename) as A from emp 去重: 1、利用rowid的唯一性查询或删除重复数据 代码语言:javascript 代码运行次数:0 ...