CREATETABLErange_hash_example(range_column_keyDATE,hash_column_keyINT,DATAVARCHAR2(20))PARTITIONBYRANGE(range_column_key)SUBPARTITIONBYHASH(hash_column_key)SUBPARTITIONS2(PARTITIONpart_1VALUESLESSTHAN(TO_DATE('2008-08-01','yyyy-mm-dd'))(SUBPARTITIONpart_1_sub_1,SUBPARTITIONpart_1_sub_2,SUBPART...
# 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_date, end_date): """ create subtable in the PostgreSQL database""" command = "creat...
# 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_date, end_date): """ create subtable in the PostgreSQL database""" command = "creat...
|table|主表| |sub_table|正要新建的子表名| |start_date|范围分界开始值| |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-...
A partitioned table isdividedintosub-tables(called partitions), which are created using separate CREATE TABLE commands. The partitioned table is itself empty. A data rowinsertedinto the table is routed to a partitionbasedon the value of columnsorexpressions in the partition key. ...
as further described below. When choosing how to partition your table, it’s also important to consider what changes may occur in the future. For example, if you choose to have one partition per customer and you currently have a small number of large customers, consider the implications if ...
CREATETABLEpublic.time_stuff(col1int,col2textdefault'stuff',col3 timestamptzNOTNULLDEFAULTnow())PARTITIONBYRANGE(col3);SELECTpartman.create_parent('public.time_stuff','col3','1 day'); 1. 2. 3. 4. 5. 6. 7. 复制 \d+time_stuff ...
Using built-in schedulers such as pg_cron and pg_timetable Taking pg_cron as an example, create a partitioned table at 14:00 every day for the next day: CREATE OR REPLACE FUNCTION create_tab_part()RETURNS integer LANGUAGEplpgsql AS ...
postgres=#create table t_range (f1 bigint,f2 timestamp default now(), f3 integer) partition by range (f3) begin (1) step (50) partitions (3) distribute by shard(f1); CREATE TABLE postgres=# insert into t_range(f1,f3) values(1,1),(2,50),(3,100),(2,110); ...
postgresql 删除 分区表 plsql删除表分区,关于数据库分区表的一些操作,如下:一、创建分区1、新建表同时创建分区createtabletmp_wzh_061102(send_seqNUMBER(15)notnull,recv_seqNUMBER(15),action_typeNUMBER(2),send_dateDATE)partitionbyrange(SEND_