查找此查詢:如何寫「或」查詢在SQL
SELECT *
FROM usre u, item i
WHERE u.user_id = ... AND i.item_id = ....
我要讓這樣的查詢,但我分了我的項目,以兩個表!
這意味着我想寫(OR
) - >這樣的查詢:
SELECT
*
FROM
usre u, drink d OR food f
WHERE
u.user_id =**
AND d.drink_id =**
OR f.food_id =**
這個查詢是真的嗎?或者我提出兩個疑問,以及如何?
用「(」和「)」包裝它 –
怎麼樣?像那樣 ? – Reema
$ data =「SELECT * FROM usre u,drink d OR food f WHERE(u.user_id = ** and d.drink_id = **)or f.food_id = **」; –