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CREATE TABLE test_table (
id serial4,
student_name varchar(128),
birthday date,
CONSTRAINT "test_table_pkey" PRIMARY KEY (id,birthday)
) PARTITION BY RANGE (birthday);
##上表是将birthday字段进行声明式分区， ： ，
##创建分区表，以每个月进行分区
CREATE TABLE test_table_01 PARTITION OF test_table
FOR VALUES FROM ('2023-01-01') TO ('2023-02-01');
CREATE TABLE test_table_02 PARTITION OF test_table
FOR VALUES FROM ('2023-02-01') TO ('2023-03-01');
CREATE TABLE test_table_03 PARTITION OF test_table
FOR VALUES FROM ('2023-03-01') TO ('2023-04-01');
CREATE TABLE test_table_04 PARTITION OF test_table
FOR VALUES FROM ('2023-04-01') TO ('2023-05-01');
CREATE TABLE test_table_05 PARTITION OF test_table
FOR VALUES FROM ('2023-05-01') TO ('2023-06-01');
CREATE TABLE test_table_06 PARTITION OF test_table
FOR VALUES FROM ('2023-06-01') TO ('2023-07-01');
##查询主表 test_table 可以查所有数据
##查询分区表，例如 test_table_01 只能查到1月份的数据
##分区表类似于虚拟表，
##官方文档：
##将不同的分区表放到不同的磁盘中
https://blog.csdn.net/songyundong1993/article/details/123357556
