CREATETABLErange_example(range_key_columnDATE,DATAVARCHAR2(20),IDINTEGER)PARTITIONBYRANGE(range_key_column)(PARTITIONpart01VALUESLESSTHAN(TO_DATE('2008-07-1 00:00:00','yyyy-mm-dd hh24:mi:ss'))TABLESPACEtbs01,PARTITIONpart02VALUESLESSTHAN(TO_DATE('2008-08-1 00:00:00','yyyy-mm-dd hh24...
ALTER TABLE tmp_wzh_061102 ADD PARTITION part4 values less than(TO_DATE('2021-09-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS')) TABLESPACE tablespaceName; 1. 2. 二、删除分区数据 注意:操作分区同时要重建索引,否则索引失效。 --删除数据 delete from table_name partition(part1) a where a.cond...
CREATETABLEmeasurement(city_id int notnull,logdate date notnull,peaktemp int,unitsales int)PARTITIONBYRANGE(logdate);CREATETABLEmeasurement_y2006m02PARTITIONOFmeasurementFORVALUESFROM('2006-02-01')TO('2006-03-01');CREATETABLEmeasurement_y2006m03PARTITIONOFmeasurementFORVALUESFROM('2006-03-01')TO('20...
解除分区表与主表的关联关系,重建新的分区表 ALTERTABLEvehicles2DETACHPARTITIONvehicles2_cars;CREATETABLEvehicles2_cars2PARTITIONOFvehicles2FORVALUESIN(2)PARTITIONBYRANGE(madedate)TABLESPACEcars_tb; 定义分区的子分区 CREATETABLEvehicles2_cars2_before_2014PARTITIONOFvehicles2_cars2FORVALUESFROM(MINVALUE)TO("20...
Example 下面的例子我们将为把订单 orders 表使用分区表来实现。order 中含有 id、user_id、create_time 三个属性,并根据 create_time 按照月份进行分区。 创建父表 CREATETABLEorders(idserial,user_id int4,create_timetimestamp(0))PARTITIONBYRANGE(create_time); ...
but for datetime ordering columns it is an interval. For example, if the ordering column is of type date or timestamp, one could writeRANGE BETWEEN '1 day' PRECEDING AND '10 days'FOLLOWING. The offset is still required to be non-null and non-negative, though the meaning of “non-negati...
目前支持range、list分区(10.0 release时应该会支持更多的方法),分区列的类型必须支持btree索引接口(几乎涵盖所有类型, 后面会说到检查方法)。 语法 1. 创建主表 [ PARTITION BY { RANGE | LIST } ( { column_name | ( expression ) } [ COLLATE collation ][ opclass ][, ... ]) ] ...
Range partitioning In range partitioning, rows are divided into partitions based on a specified range of values from a partitioning column. A table can be partitioned based on date ranges or numeric ranges, for example. Create a range-partitioned table based on date ranges ...
end_date 范围分界结束值 #!/usr/bin/python3 import psycopg2 from config import config # example: create table tbl_game_android_step_log_2021_07 PARTITION OF tbl_game_android_step_log FOR VALUES FROM ('2021-07-01') TO ('2021-08-01'); def create_table(db, table, sub_table, start_da...
postgres=# insert into t_native_range values(1,'2016-09-01',1); INSERT01 list 分区表 表格通过明确的键值进行分区。 创建主分区 postgres=# create table t_native_list(f1 bigserial not null,f2 text, f3 integer,f4 date) partition by list( f2 ) distribute by shard(f1); ...