確定某個數字是否大於要求

Question

嗨，我在MYSQL中有一張桌子

  prices

cost  name
3.10  salt
4.00  soda
1.00  bread
1.50  candy
3.50  bread
4.00  candy

我只希望顯示所有項目都超過3.00的項目

所以像

cost  name
3.10  salt
4.00  soda

這將是我的結果

如何在MYSQL中做到這一點？

Answer 1

SELECT p1.*
FROM prices p1
JOIN (SELECT name, MIN(cost) mincost
      FROM prices
      GROUP BY name
      HAVING mincost > 3) p2
ON p1.name = p2.name

Answer 2

您可以在子查詢或聯接中使用min。

select * from prices
  where name in (select name from prices group by name having min(cost) > 3);

鏈接到SQLFiddle

Answer 3

select cost,name from prices where cost>3.00 order by name;

輸出將是

cost  name
3.50  bread
4.00  candy
3.10  salt
4.00  soda