add orders hypertable convert

This commit is contained in:
2026-01-29 14:22:42 +08:00
parent b341c02a61
commit 04811c31b4
@@ -0,0 +1,90 @@
<?php
use Hyperf\Database\Schema\Schema;
use Hyperf\Database\Migrations\Migration;
return new class extends Migration
{
/**
* Run the migrations.
*
* 将 orders 表转换为 TimescaleDB hypertable
*
* 注意事项:
* 1. Hypertable 要求主键和唯一约束必须包含分区键 (created_date)
* 2. Hypertable 不支持被外键引用,需先删除 order_items 的外键
* 3. 转换后数据完整性需在应用层保证
*/
public function up(): void
{
// 1. 删除 order_items 表对 orders 的外键约束
Schema::table('order_items', function ($table) {
$table->dropForeign(['order_id']);
});
// 2. 删除原有的主键约束
Schema::getConnection()->statement('ALTER TABLE orders DROP CONSTRAINT orders_pkey');
// 3. 删除原有的唯一约束
Schema::getConnection()->statement('ALTER TABLE orders DROP CONSTRAINT orders_store_platform_order_unique');
// 4. 创建新的复合主键(包含分区键)
Schema::getConnection()->statement('ALTER TABLE orders ADD PRIMARY KEY (id, created_date)');
// 5. 转换为 hypertable(按年分区)
Schema::getConnection()->statement("
SELECT create_hypertable('orders', 'created_date',
chunk_time_interval => INTERVAL '1 year',
migrate_data => true
)
");
// 6. 创建新的唯一约束(包含分区键)
Schema::getConnection()->statement('
ALTER TABLE orders ADD CONSTRAINT orders_store_platform_order_unique
UNIQUE (store_id, platform_order_id, created_date)
');
}
/**
* Reverse the migrations.
*
* 警告:回滚 hypertable 会丢失分区结构,数据会保留但需要手动处理
*/
public function down(): void
{
// 注意:TimescaleDB 不支持直接将 hypertable 转回普通表
// 需要创建新表、迁移数据、删除 hypertable、重命名新表
// 1. 创建临时表
Schema::getConnection()->statement('
CREATE TABLE orders_temp AS SELECT * FROM orders
');
// 2. 删除 hypertable
Schema::getConnection()->statement('DROP TABLE orders');
// 3. 重命名临时表
Schema::getConnection()->statement('ALTER TABLE orders_temp RENAME TO orders');
// 4. 重建原有约束
Schema::getConnection()->statement('ALTER TABLE orders ADD PRIMARY KEY (id)');
Schema::getConnection()->statement('
ALTER TABLE orders ADD CONSTRAINT orders_store_platform_order_unique
UNIQUE (store_id, platform_order_id)
');
// 5. 重建外键
Schema::table('order_items', function ($table) {
$table->foreign('order_id')
->references('id')
->on('orders')
->onDelete('cascade');
});
// 6. 重建序列(如果需要)
Schema::getConnection()->statement("
SELECT setval('orders_id_seq', (SELECT MAX(id) FROM orders))
");
}
};