思路1
先用内联结筛选出销售给RED的所有orders中包含的sales_id,再用NOT IN
SELECT s.name
FROM salesperson s
WHERE s.sales_id NOT IN (
SELECT o.sales_id
FROM orders o INNER JOIN company c
ON o.com_id=c.com_id WHERE c.name="RED");
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先用内联结筛选出销售给RED的所有orders中包含的sales_id,再用NOT IN
SELECT s.name
FROM salesperson s
WHERE s.sales_id NOT IN (
SELECT o.sales_id
FROM orders o INNER JOIN company c
ON o.com_id=c.com_id WHERE c.name="RED");
Last updated
Was this helpful?