Query Mirror
Exhibit NO. 003Learn SQL by seeing the query behind each click.
Students build queries visually, then practise against an expected result. For another education tool, Letterkeep helps professors manage recommendation eligibility rather than teach queries.
Four synthetic datasets; correct results pass even when the SQL differs.
SELECT pr.prod_name AS "Product Name", pr.unit_price AS "Unit Price ($)"
FROM product pr
ORDER BY pr.unit_price ASC11 matching rows
| Product | Price |
|---|---|
| Resistance Bands | 14.99 |
| Cookbook | 19.99 |
| Desk Lamp | 24.99 |
SELECT pr.prod_name AS "Product Name", pr.unit_price AS "Unit Price ($)"
FROM product pr
WHERE pr.unit_price<=50
ORDER BY pr.unit_price ASC6 matching rows
| Product | Price |
|---|---|
| Resistance Bands | 14.99 |
| Cookbook | 19.99 |
| Desk Lamp | 24.99 |
First three matching rows from the synthetic product table.