使用UNION與LIMIT的MySQL操作指南

Question

所以，我手邊有這個問題。

我必須從不同的表中使用內連接來取得多個記錄，並使用UNION或UNION ALL進行分頁，下面的程式碼是用來取得所有記錄和計數的。這是我的宿敵：

(SELECT pp.id as id, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
        inner join users u ON pp.users_id $username
        inner join inn_oficial i ON i.photo_id = pp.property_id
        left join plans p ON pp.plans_id = p.id
        WHERE (pp.type = 1 or pp.type = 2) 
        $where ) 
       UNION 
        (SELECT pp.id as id, pp.*, i.model as name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
        inner join users u ON pp.users_id $username
        inner join rent_oficial i ON i.photo_id = pp.property_id
        left join plans p ON pp.plans_id = p.id
        WHERE pp.type = 3
        $where) 
       UNION 
        (SELECT pp.id as id, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
        inner join users u ON pp.users_id $username
        inner join fish_pay_oficial i ON i.photo_id = pp.property_id
        left join plans p ON pp.plans_id = p.id
        WHERE pp.type = 4
        $where ) 
       UNION 
        (SELECT pp.id as id, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
        inner join users u ON pp.users_id $username
        inner join stores_oficial i ON i.photo_id = pp.property_id
        left join plans p ON pp.plans_id = p.id
        WHERE pp.type = 5
        $where)
       UNION
        (SELECT pp.id as id, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
        inner join users u ON pp.users_id $username
        inner join transfer_oficial i ON i.photo_id = pp.property_id
        inner join plans p ON pp.plans_id = p.id
        WHERE pp.type = 6
        $where)
        GROUP BY pp.id
        ORDER BY pp.id

我從13.2.9.3 UNION Clause中獲取了這個例子，並在腳本上嘗試了一下

當我嘗試運行程式碼時，它報錯了

在第1行的'GROUP BY id ORDER BY id LIMIT 0.25'旁邊，你的SQL語法有錯誤

#對不起，我的英文很糟糕，這不是我的母語

Answer 1

I solved kskskskks, just add the pp id column as id_p and then ordered by that

(SELECT pp.id as id_p, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
    inner join users u ON pp.users_id $username
    inner join inn_oficial i ON i.photo_id = pp.property_id
    left join plans p ON pp.plans_id = p.id
    WHERE (pp.type = 1 or pp.type = 2) 
    $where ) 
   UNION 
    (SELECT pp.id as id_p, pp.*, i.model as name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
    inner join users u ON pp.users_id $username
    inner join rent_oficial i ON i.photo_id = pp.property_id
    left join plans p ON pp.plans_id = p.id
    WHERE pp.type = 3
    $where) 
   UNION 
    (SELECT pp.id as id_p, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
    inner join users u ON pp.users_id $username
    inner join fish_pay_oficial i ON i.photo_id = pp.property_id
    left join plans p ON pp.plans_id = p.id
    WHERE pp.type = 4
    $where ) 
   UNION 
    (SELECT pp.id as id_p, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
    inner join users u ON pp.users_id $username
    inner join stores_oficial i ON i.photo_id = pp.property_id
    left join plans p ON pp.plans_id = p.id
    WHERE pp.type = 5
    $where)
   UNION
    (SELECT pp.id as id_p, pp.*, i.name, p.name as plans_name, u.username,u.email,u.phone, DATE_ADD(pp.init_date, INTERVAL pp.avaliable_days DAY) as end_date FROM property_purchase pp
    inner join users u ON pp.users_id $username
    inner join transfer_oficial i ON i.photo_id = pp.property_id
    inner join plans p ON pp.plans_id = p.id
    WHERE pp.type = 6
    $where)
    ORDER BY id_p $pagination