Postgresql中水平分区的正确步骤如下:
PARTITION BY RANGE
子句定义分区表名。例如,以下示例将表sales
分为三个分区:sales_q1
,sales_q2
和sales_q3
。CREATE TABLE sales (
id INT PRIMARY KEY,
sale_date DATE,
sale_amount DECIMAL(10,2)
)
PARTITION BY RANGE (YEAR(sale_date))
(
PARTITION p0 VALUES LESS THAN (2000),
PARTITION p1 VALUES LESS THAN (2010),
PARTITION p2 VALUES LESS THAN (2020),
PARTITION p3 VALUES LESS THAN (2030)
);CREATE TABLE sales (
id INT PRIMARY KEY,
sale_date DATE,
sale_amount DECIMAL(10,2)
)
PARTITION BY KEY (id)
(
PARTITION p0 VALUES LESS THAN (1000),
PARTITION p1 VALUES LESS THAN (2000),
PARTITION p2 VALUES LESS THAN (3000),
PARTITION p3 VALUES LESS THAN (4000)
);INSERT INTO sales (id, sale_date, sale_amount)
VALUES (1, '2022-01-01', 100.00),
(2, '2022-01-02', 200.00),
(3, '2022-01-03', 300.00);SELECT * FROM sales_q1;以上就是使用PostgreSQL进行水平分区的正确步骤。PARTITION BY KEY
子句定义分区键。例如,以下示例将表sales
分为三个分区:sales_q1
,sales_q2
和sales_q3
。sales_q1
分区中。sales_q1
分区的数据。领取专属 10元无门槛券
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