add orders_items hypertable convert
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<?php
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use Hyperf\Database\Schema\Schema;
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use Hyperf\Database\Migrations\Migration;
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return new class extends Migration
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{
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/**
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* Run the migrations.
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*
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* 将 order_items 表转换为 TimescaleDB hypertable
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*
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* 依赖:
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* - 2026_01_29_141057_add_created_date_to_order_items_table.php
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* - 2026_01_29_141058_convert_orders_to_hypertable.php
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*
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* 注意事项:
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* 1. Hypertable 要求主键和唯一约束必须包含分区键 (created_date)
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* 2. 数据完整性(与 orders 的关联)需在应用层保证
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*/
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public function up(): void
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{
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// 1. 删除原有的主键约束
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Schema::getConnection()->statement('ALTER TABLE order_items DROP CONSTRAINT order_items_pkey');
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// 2. 删除原有的唯一约束
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Schema::getConnection()->statement('ALTER TABLE order_items DROP CONSTRAINT order_items_order_sub_order_unique');
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Schema::getConnection()->statement('ALTER TABLE order_items DROP CONSTRAINT order_items_store_platform_sub_unique');
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// 3. 创建新的复合主键(包含分区键)
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Schema::getConnection()->statement('ALTER TABLE order_items ADD PRIMARY KEY (id, created_date)');
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// 4. 转换为 hypertable(按年分区,与 orders 保持一致)
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Schema::getConnection()->statement("
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SELECT create_hypertable('order_items', 'created_date',
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chunk_time_interval => INTERVAL '1 year',
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migrate_data => true
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)
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");
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// 5. 创建新的唯一约束(包含分区键)
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Schema::getConnection()->statement('
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ALTER TABLE order_items ADD CONSTRAINT order_items_order_sub_order_unique
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UNIQUE (order_id, sub_order_id, created_date)
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');
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Schema::getConnection()->statement('
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ALTER TABLE order_items ADD CONSTRAINT order_items_store_platform_sub_unique
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UNIQUE (store_id, platform_order_id, sub_order_id, created_date)
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');
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// 6. 创建复合索引(支持按公司+时间查询)
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Schema::getConnection()->statement('
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CREATE INDEX idx_order_items_company_created
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ON order_items (company_id, created_date DESC)
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');
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}
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/**
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* Reverse the migrations.
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*
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* 警告:回滚 hypertable 会丢失分区结构,数据会保留但需要手动处理
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*/
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public function down(): void
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{
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// 1. 创建临时表
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Schema::getConnection()->statement('
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CREATE TABLE order_items_temp AS SELECT * FROM order_items
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');
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// 2. 删除 hypertable
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Schema::getConnection()->statement('DROP TABLE order_items');
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// 3. 重命名临时表
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Schema::getConnection()->statement('ALTER TABLE order_items_temp RENAME TO order_items');
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// 4. 重建原有约束
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Schema::getConnection()->statement('ALTER TABLE order_items ADD PRIMARY KEY (id)');
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Schema::getConnection()->statement('
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ALTER TABLE order_items ADD CONSTRAINT order_items_order_sub_order_unique
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UNIQUE (order_id, sub_order_id)
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');
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Schema::getConnection()->statement('
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ALTER TABLE order_items ADD CONSTRAINT order_items_store_platform_sub_unique
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UNIQUE (store_id, platform_order_id, sub_order_id)
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');
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// 5. 重建序列(如果需要)
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Schema::getConnection()->statement("
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SELECT setval('order_items_id_seq', (SELECT MAX(id) FROM order_items))
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");
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// 6. 删除 created_date 索引(字段保留,可在下一个回滚中删除)
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Schema::getConnection()->statement('DROP INDEX IF EXISTS idx_order_items_company_created');
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}
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};
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