p1投影机

_相关内容

CREATE ETL

CREATE ETL IF NOT EXISTS filter1 AS INSERT INTO `lindorm_table`.`default`.`sink`(p1,c1)SELECT p1,c1 FROM `lindorm_table`.`default`.`source` WHERE c1 10;示例二:创建ETL filter2,将源表 source 中符合条件的数据插入到结果表 ...

分区命名规则

table_name|partition_name|subpartition_name|+-+-+-+|test_tbl_part_name2|p1|p1sp1|test_tbl_part_name2|p1|p1sp2|test_tbl_part_name2|p1|p1sp3|test_tbl_part_name2|p1|p1sp4|test_tbl_part_name2|p2|p2sp1|test_tbl_part_name2|p2|p2...

ALTER ETL

CREATE ETL IF NOT EXISTS filter2 WITH(`parallelism`='2',`stream.execution.checkpointing.interval`='30000')AS INSERT INTO `lindorm_table`.`default`.`sink`(p1,c1)SELECT p1,c1 FROM `lindorm_table`.`default`.`source` WHERE c1 ...

PolarDB for PostgreSQL 11

11/bin/pgbench-M prepared-n-r-P 1-f./ro.sql-c 256-j 128-T 120-D scale=10000-D range=500000000 Total data volume:1 billion records,hot data:1 billion records/usr/pgsql-11/bin/pgbench-M prepared-n-r-P 1-f./ro.sql-c 256-j 128...

Performance White Paper

11/bin/pgbench-M prepared-n-r-P 1-f./ro.sql-c 256-j 128-T 120-D scale=10000-D range=500000000 Total data volume:1 billion records,hot data:1 billion records/usr/pgsql-11/bin/pgbench-M prepared-n-r-P 1-f./ro.sql-c 256-j 128...

Split a partition into multiple partitions

You can execute the following SQL statement to split the p1 partition into the p10,p11,and p12 partitions.This indicates that both the p1 partition of tb1 and the p1 partition of tb2 are split into the p10,p11,and p12 ...

Overview of query plans

c1,c2,c3 from test where((p1 4)AND(p1=3)AND(p1 LIKE 3_%))supportEmptyResult true Candidate tables:Data table:test,scores=1.0.1,need query back=false,sort type=FORWARD Chose data table[test].-SELECT p1,c1,c2,c3 from test ...

Change the table group of a table in a database in...

PARTITION p2 VALUES LESS THAN(100))This statement can be executed.Partition p2 of table tb1 is stored on data node DN2.After the statement is executed,partition p2 of table tb1 is migrated from DN2 to DN3,and the table ...

表组

分区名称相同的分区定义完全一致,例如对于List分区,所有表的P1的定义都是 PARTITION P1 VALUES IN('杭州','广州')。分区名称相同的物理表都在一个存储节点。在表组内,分区名称相同的分区集合称为分区组,例如所有表的P1分区集合称为...

Aggregate functions

Sample output:+-+-+|p1|EXPR$1|+-+-+|1|18,10|2|100,40,66|+-+-+Example 3:Group the column c1 based on the primary key column p1 and sort the result in ascending order based on the column c1.SELECT p1,GROUP_CONCAT(c1 ORDER BY...

动态列

返回结果如下:+-+-+-+-+-+|p1|c1|c2|c3|c4|+-+-+-+-+-+|1|null|1|0x41|null|2|null|null|null|0xef0011|3|null|null|null|0xef0011|+-+-+-+-+-+重要 对于动态列表的 SELECT*查询操作,LIMIT的默认最大值为5000,超过最大值会报错。...

分区合并

表级用法 假设表tb1的定义为:CREATE TABLE tb1(a int)PARTITION BY LIST(a)(PARTITION p1 VALUES IN(1,2,3,4,5,6),PARTITION p2 VALUES IN(7,8,9),PARTITION p3 VALUES IN(default))执行以下SQL将p1p3合并成一个新分区p13:ALTER TABLE ...

Parallel append

QUERY PLAN-Gather Workers Planned:6-Parallel Append-Seq Scan on prt1_p5-Seq Scan on prt1_default-Seq Scan on prt1_p4-Seq Scan on prt1_p1-Seq Scan on prt1_p2-Seq Scan on prt1_p3(9 rows)In the preceding example,the prt1 ...

Parallel append

QUERY PLAN-Gather Workers Planned:6-Parallel Append-Seq Scan on prt1_p5-Seq Scan on prt1_default-Seq Scan on prt1_p4-Seq Scan on prt1_p1-Seq Scan on prt1_p2-Seq Scan on prt1_p3(9 rows)There are six partitions of the prt1 ...

Parallel append

QUERY PLAN-Gather Workers Planned:6-Parallel Append-Seq Scan on prt1_p5-Seq Scan on prt1_default-Seq Scan on prt1_p4-Seq Scan on prt1_p1-Seq Scan on prt1_p2-Seq Scan on prt1_p3(9 rows)There are six partitions of the prt1 ...

Parallel append

QUERY PLAN-Gather Workers Planned:6-Parallel Append-Seq Scan on prt1_p5-Seq Scan on prt1_default-Seq Scan on prt1_p4-Seq Scan on prt1_p1-Seq Scan on prt1_p2-Seq Scan on prt1_p3(9 rows)In the preceding example,the prt1 ...

Use elements in ROS templates to configure JSON ...

p2-p1 Default:p1:p10 p2:true-p1:p11 p2:false Sample GUI When you use the sample template to create a stack or stack group in the ROS console,the elements in the multidimensional array are rendered as parameters and values....

Partitioned tables

partition_tables AS(SELECT DISTINCT p1.table_namespace,p1.table_name FROM hologres.hg_table_properties p1 WHERE p1.property_key='logical_partition_columns' AND EXISTS(SELECT 1 FROM hologres.hg_table_properties p2 WHERE p2....

RANGE-*composite partition

r_h_tp(id bigint not null auto_increment,bid int,name varchar(30),birthday datetime not null,primary key(id))PARTITION BY RANGE(TO_DAYS(birthday))SUBPARTITION BY HASH(bid)SUBPARTITIONS 4(PARTITION p1 VALUES LESS THAN(TO_...

修改分区

示例1:修改非模板化二级List分区并增加Values 给k_l_ntp_t1表的第1个一级分区p1的二级分区p1sp2增加2个values,新的values值是(2017,2019)。具体用法如下所示:表级用法#基于表名字进行表级的分区变更操作 ALTER TABLE k_l_ntp_t1/*表...

RANGE COLUMNS-*composite partition

name)SUBPARTITION BY HASH(bid)SUBPARTITIONS 4(PARTITION p1 VALUES LESS THAN('2000-01-01','Jack'),PARTITION p2 VALUES LESS THAN(MAXVALUE,MAXVALUE))Non-templated syntax CREATE TABLE tb_rc_h_ntp(id bigint not null auto_...

ALTER INDEX

搜索索引:您可以在增加一个或多个列的同时,为新增的列增加索引键属性,例如 ADD COLUMNS(c1,c3,p1(type=text,analyzer=ik))表示新增三个索引列c1、c3和p1,并指定p1列使用ik分词器。可添加的索引键属性,请参见 搜索索引键属性(option_...

重组分区

给r_t1表的p1p2、p3这3个连续分区重组为p4、p5,且p4、p5的定义是(PARTITION p4 VALUES LESS THAN(2024),PARTITION p5 VALUES LESS THAN(2027))。具体用法如下所示:表级用法#基于表名字进行表级的分区变更操作 ALTER TABLE r_t1/*表名*/...

JSON数据类型

SELECT子句中使用json_extract函数,表示返回c2列中k1键的值,并将返回结果的列名设置为j String select="select p1,c1,c2,json_extract(c2,'$.k1')j from tb where p1=1;ResultSet resultSet=stmt.executeQuery(select);resultSet.next();...

外部项目1.0迁移为湖仓一体2.0方案

由于湖仓一体1.0的外部项目...虽然Project(p1)未开启元数据支持的Schema模式,但是开启了SQL语法支持的Schema模式,查询 p1.t2 还是会在Project(p1)下查询Schema(p1),因此需要将SQL修改为:SELECT*FROM p2.e.t1 JOIN p1.default.t2;

LIST COLUMNS-*composite partitioning policies

name)SUBPARTITION BY HASH(bid)SUBPARTITIONS 4(PARTITION p1 VALUES IN(('2000-01-01','Jack'),('2001-01-01','Bob')),PARTITION p2 VALUES IN(DEFAULT))Non-templated syntax CREATE TABLE tb_lc_h_ntp(id bigint not null auto_...

CreateRouteRule-创建流转规则

INCIDENT incidentLevel string 是 事件级别:P1P2、P3、P4 递减。P1 assignObjectId long 是 事件分派对象 ID(服务组 ID 或用户 ID)。65 assignObjectType string 是 事件分派对象类型:SERVICEGROUP:服务组。USER:单个用户。...
< 1 2 3 4 ... 200 >
共有200页 跳转至: GO
新人特惠 爆款特惠 最新活动 免费试用