复制表
更新时间 2025-02-05 09:36:26
最近更新时间: 2025-02-05 09:36:26
本页介绍天翼云TeleDB数据库的复制表功能。
复制表是所有DN 节点都存储一份相同的数据。
teledb=# create table t_rep (id int,mc text) distribute by replication;
CREATE TABLE
teledb=# \d+ t_rep
Table "public.t_rep"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
id | integer | | | | plain | |
mc | text | | | | extended | |
Distribute By: REPLICATION
Location Nodes: ALL DATANODES
所有节点都会保存一份数据。
teledb=# insert into t_rep values(1,'teledb'),(2,'ctyun');
\COPY 2
teledb=# EXECUTE DIRECT ON (dn01) 'select * from t_rep';
id | mc
----+---------
1 | teledb
2 | ctyun
(2 rows)
teledb=# EXECUTE DIRECT ON (dn02) 'select * from t_rep';
id | mc
----+---------
1 | teledb
2 | ctyun
(2 rows)
