MYSQL
```\nSELECT Product.product_id,product_name\nFROM Product\nINNER JOIN Sales USING(product_id)\nGROUP BY Product.product_id\nHAVING SUM(CASE WHEN\n           sal
```\nSELECT Product.product_id,product_name\nFROM Product\nINNER JOIN Sales USING(product_id)\nGROUP BY Product.product_id\nHAVING SUM(CASE WHEN\n           sale_date BETWEEN \'2019-01-01\' AND \'2019-03-31\' THEN 0\n           ELSE 1\n           END)=0;
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