20 lines
1010 B
MySQL
20 lines
1010 B
MySQL
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-- Отдельная таблица записей об остатках (создаётся при каждом выполнении и переносе)
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CREATE TABLE shopping_volume_records (
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id SERIAL PRIMARY KEY,
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item_id INTEGER NOT NULL REFERENCES shopping_items(id) ON DELETE CASCADE,
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user_id INTEGER NOT NULL REFERENCES users(id),
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action_type VARCHAR(20) NOT NULL,
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volume_remaining NUMERIC(10,4),
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volume_purchased NUMERIC(10,4),
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daily_consumption NUMERIC(10,4),
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created_at TIMESTAMP NOT NULL DEFAULT NOW()
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);
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CREATE INDEX idx_shopping_volume_records_item_id ON shopping_volume_records(item_id);
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-- Создаём начальные записи для всех существующих товаров (остаток 0, дата = created_at)
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INSERT INTO shopping_volume_records (item_id, user_id, action_type, volume_remaining, volume_purchased, created_at)
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SELECT id, user_id, 'create', 0, 0, created_at
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FROM shopping_items
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WHERE deleted = FALSE;
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