-2
我很努力得到正確的語法,我需要什麼,想知道如果有人可以幫忙嗎?加入3列表與多列連接
我有3個表:用戶,owneditems和shopitems
從用戶我需要獲得用戶名和城市
從owneditems我需要獲得用戶名和爲itemid
從shopitems我需要得到在owneditems和用戶ID和城市
用戶ID將是相同的
的itemid上owneditems將是一樣的shopitems ID
市shopitems和用戶將是相同的
我後是要找出用戶在打領帶哪個城市瞭解他們在那個城市擁有哪些物品。
我嘗試使用的語法是
SELECT users.city, users.id, shopitems.city, shopitems.id, owneditems.itemid, owneditems.userid
FROM users, shopitems, owneditems
WHERE users.city = shopitems.city
AND owneditems.itemid = shopitems.it
AND users.id = owneditems.userid
我想我最終得到它 SELECT users.city,users.id,shopitems.city,shopitems.id,owneditems.itemid,owneditems.userid FROM users,shopitems,owneditems WHERE users.city = shopitems.city AND owneditems.itemid = shopitems.id和users.id = owneditems.userid AND users.city = 1 AND users.id = 93074 –
那麼您的查詢是否正在工作? – Taryn