34 lines
1.3 KiB
Plaintext
34 lines
1.3 KiB
Plaintext
CREATE TABLE test_table (
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id serial4,
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student_name varchar(128),
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birthday date,
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CONSTRAINT "test_table_pkey" PRIMARY KEY (id,birthday)
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) PARTITION BY RANGE (birthday);
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##上表是将birthday字段进行声明式分区，注意：如果表中已有主键，那么分区用的字段必须和已有主键一起做一个联合主键。除非表中没有主键。
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##创建分区表，以每个月进行分区
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CREATE TABLE test_table_01 PARTITION OF test_table
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FOR VALUES FROM ('2023-01-01') TO ('2023-02-01');
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CREATE TABLE test_table_02 PARTITION OF test_table
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FOR VALUES FROM ('2023-02-01') TO ('2023-03-01');
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CREATE TABLE test_table_03 PARTITION OF test_table
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FOR VALUES FROM ('2023-03-01') TO ('2023-04-01');
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CREATE TABLE test_table_04 PARTITION OF test_table
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FOR VALUES FROM ('2023-04-01') TO ('2023-05-01');
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CREATE TABLE test_table_05 PARTITION OF test_table
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FOR VALUES FROM ('2023-05-01') TO ('2023-06-01');
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CREATE TABLE test_table_06 PARTITION OF test_table
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FOR VALUES FROM ('2023-06-01') TO ('2023-07-01');
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##查询主表 test_table 可以查所有数据
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##查询分区表，例如 test_table_01 只能查到1月份的数据
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##分区表类似于虚拟表，在Navicat中是看不到的。
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##官方文档：https://www.postgresql.org/docs/16/ddl-partitioning.html#DDL-PARTITIONING
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##将不同的分区表放到不同的磁盘中
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https://blog.csdn.net/songyundong1993/article/details/123357556 |