concat
select product_id, year as first_year, quantity, price\nfrom Sales\nwhere concat(product_id, year) in (select concat(product_id, min(year)) from Sales group by 
select product_id, year as first_year, quantity, price\nfrom Sales\nwhere concat(product_id, year) in (select concat(product_id, min(year)) from Sales group by product_id
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