sql - 如何以这种方式选择数据库 - sql

Question

我有这张桌子

id 所有者组模型  
1 1 形状圆形  
2 1 个矩形  
3 1 个形状  
4 2 水果 苹果  
5 2 水果 橙子  
6 2个水果香蕉  
7 3 个形状的圆圈  
8 3 个形状的矩形  
9 3 形星

每个所有者选择一个组并输入 3 个选项，现在我想找到选择形状并输入圆形和星形的所有者。

它必须返回所有者 id = 3

Answer 1

假设group和model对每个人都是独一无二的owner

SELECT  a.owner
FROM    tableName a
WHERE   a.[group] = 'shapes' AND
        a.model IN ('circle','star')
GROUP   BY a.owner
HAVING  COUNT(*) = 2

• SQLFiddle 演示

否则，您需要唯一计算model

SELECT  a.owner
FROM    tableName a
WHERE   a.[group] = 'shapes' AND
        a.model IN ('circle','star')
GROUP   BY a.owner
HAVING  COUNT(DISTINCT a.model) = 2

Answer 2

在指定的参数内，这将起作用： SELECT owner WHERE [group] = 'shapes' AND model = 'circle' INTERSECT SELECT owner WHERE [group] = 'shapes' AND model = 'star'