MYSQL IN語句

Question

我用IN來選擇東西......

WHERE categories IN ("red", "blue", "green")

這會選擇紅色，藍色或綠色類別中的任何項目，我的問題是，有沒有辦法選擇必須屬於所有三個類別的項目？

Answer 1

SELECT Item
    FROM YourTable
    WHERE categories IN ('red', 'blue', 'green')
    GROUP BY Item
    HAVING COUNT(DISTINCT categories) = 3

Answer 2

SELECT Item
    FROM YourTable
    WHERE categories ALL ('red', 'blue', 'green')