DETAIL: Table "test" contains unique indexes. SQL state: 42809 我从login列中删除了唯一约束,但它显示了相同的错误。 当我使分区表具有相同的属性并且两个分区最初都位于同一服务器上时,除了postgres注意login唯一性per-partition而不是在整个表中,所有分区都工作良好,但我建议这是它的局限性。 那么,如何将第...
--创建测试表,创建表的时候,会根据表中列的类型决定是否创建toast表,参见函数needs_toast_table-》heapam_relation_needs_toast_table postgres=# create table test_varlena(id int, author name, title varchar(256), content text); CREATE TABLE --查看存储情况,Storage字段 postgres=# \d+ test_varlena Ta...
alter partition function CreateTime() merge range('2026-01-01T00:00:00') --分区数据查询 select $partition.CreateTime(CREATE_DATE) as Patition,COUNT(*) countRow from XXX_TABLE group by $partition.CreateTime(CREATE_DATE) --查询不同分区 SELECT * FROM XXX_TABLE WHERE $partition.CreateTime(CRE...
ALTER TABLE distributors ADD CONSTRAINT distfk FOREIGN KEY (address) REFERENCES addresses (address); ###To add a foreign key constraint to a table with the least impact on other work: ALTER TABLE distributors ADD CONSTRAINT distfk FOREIGN KEY (address) REFERENCES addresses (address) NOT VALID; ...
TheALTER TABLE...SPLIT PARTITIONcommand adds a partition to an existingLISTorRANGEpartitioned table. TheALTER TABLE… SPLIT PARTITIONcommand can't add a partition to aHASHpartitioned table. There's no upper limit to the number of part...
Needs to be declared up front when you first create a Postgres table, since you can't turn an existing regular Postgres table into a partitioned table without a significant amount of data rewriting.1 How Postgres partitioning can benefit you ...
partition_date := partition_date + '1 month'::INTERVAL; values_to := TO_TIMESTAMP(CAST(partition_date as VARCHAR), 'YYYY-MM-DD 00:00:00'); EXECUTE FORMAT( ' CREATE TABLE order_with_returns_%s PARTITION OF order_with_returns
grant all privileges on database ambari to ambari;#列出所有表\dselect * from users;(ambari界面登录的用户)hosts 主机列表 备库192.168.159.12安装好数据库,不要启动rm -rf /var/lib/pgsql/data/* 主库192.168.159.11root vi postgresql.conf [root@hdp1 data]# cat postgresql.conf # --- # PostgreSQ...
To avoid this, you can add a default partition: CREATE TABLE sale_default PARTITION OF sale FOR DEFAULT; The default partition will store rows that did not match any other partition: db=# INSERT INTO sale (sale_date, country_code, product_sku, units) db-# VALUES ('2019-04-01', 'NY...
table' WHEN 'p' THEN 'partitioned table' END as "Type", pg_catalog.array_to_string(c.relacl, E'\n') AS "Access privileges", pg_catalog.array_to_string(ARRAY( SELECT attname || E':\n ' || pg_catalog.array_to_string(attacl, E'\n ') FROM pg_catalog.pg_attribute a WHERE ...