shop
15 lines
534 B
SQL
15 lines
534 B
SQL
-- Подписка «сообщить о поступлении»
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CREATE TABLE IF NOT EXISTS product_stock_alerts (
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id SERIAL PRIMARY KEY,
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product_id INTEGER NOT NULL REFERENCES products(id) ON DELETE CASCADE,
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email TEXT NOT NULL,
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user_id INTEGER REFERENCES users(id) ON DELETE SET NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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notified_at TIMESTAMPTZ,
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UNIQUE (product_id, email)
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);
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CREATE INDEX IF NOT EXISTS idx_stock_alerts_product_pending
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ON product_stock_alerts (product_id)
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WHERE notified_at IS NULL;
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