一个是生成 删除分区的语句。【alter table ${table_name} truncate partition ${delete_text} drop storage】 一个是生成 构建分区的语句。【ALTER TABLE ${table_name} ADD PARTITION ${pre_text} VALUES LESS THAN(TO_DATE('${pre}','YYYY-M
postgres=# create table test_1 partition of test for values from (MINVALUE) to (10); CREATE TABLE postgres=# create table test_2 partition of test for values from (10) to (100); CREATE TABLE postgres=# create table test_3 partition of test for values from (100) to (1000); CREATE ...
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...
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; ...
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...
postgres=# create table test_toast(id int, author name, title varchar(256), content1 text, content2 text); CREATE TABLE --默认text为extended,将content2改为external。语法如下: --alter table table_name alter column {$column_name} set storage { PLAIN | MAIN | EXTERNAL | EXTENDED } ; post...
create table partition_name partition of table_name for values from (value) to (value) partition by range (column_name); 创建约束语法 alter table table_name add constraint constraint_name unique (column_name); org.jkiss.dbeaver.model.sql.DBSQLException: SQL 错误 [0A000]: ERROR: insufficient...
存储时间值 timestamp:存储日期和时间值...每张表只能使用一次 CHECK:确保列中值的条件为真 REFERENCES:值必须存在于另一个表的列中在定义列之后,可以声明表范围的约束。...”表中添加一列: ALTER TABLE pg_equipment ADD COLUMN functioning bool; ALTER TABLE 我们可以通过输入来查看额外的列: \d pg_...
数据导入表的方式 1、直接向分区表中插入数据 insert into table score3 partition(month ='201807') values ('001','002','100'...,c_id string,s_score int) row format delimited fifields terminated by '\t' location '/myscore6'; 数据导出表的方式...1、将查询的结果导出到本地 insert overwrit...
CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'S' THEN 'sequence' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'partitioned table' END as "Type", pg_catalog.array_to_string(c.relacl, E'\n') AS "Access privileges", pg...