使用PHP和MySQL加入多表時出現SQL錯誤

Question

我在嘗試使用PHP和MySQL中的不同條件加入多個表時出現以下錯誤。

Error:

Incorrect usage of UNION and ORDER BY 

我下面解釋我的查詢。

select b.member_id,b.rest_name,b.city,b.proviance,b.postal,b.address,b.country,b.person,b.mobile,b.url,b.status,b.premium,b.image,b.business_phone_no,b.email,b.multiple_image,b.latitude,b.longitude,b.quadrant,d.member_id,d.day_id,d.cat_id,d.subcat_id,d.comment,d.city,d.special_images,c.cat_id,c.special,sub.subcat_id,sub.subcat_name,sub.status,sl.day_id,sl.member_id,sl.date_from,sl.date_to from db_restaurant_basic as b left join db_restaurant_detail as d on b.member_id=d.member_id left join db_category as c on d.cat_id=c.cat_id left join db_subcategory as sub on d.subcat_id=sub.subcat_id left join db_special_images as sl on d.day_id=sl.day_id and d.member_id=sl.member_id where b.city='2' and d.day_id='3' and c.special='2' and sl.date_from <='2016-10-26' and sl.date_to >= '2016-10-26' and b.status=1 and sub.status=1 and sl.date_from !='' and sl.date_to !='' ORDER BY b.member_id DESC UNION ALL SELECT b.member_id,b.rest_name,b.city,b.proviance,b.postal,b.address,b.country,b.person,b.mobile,b.url,b.status,b.premium,b.image,b.business_phone_no,b.email,b.multiple_image,b.latitude,b.longitude,b.quadrant,d.member_id,d.day_id,d.cat_id,d.subcat_id,d.comment,d.city,d.special_images,c.cat_id,c.special,sub.subcat_id,sub.subcat_name,sub.status,sl.day_id,sl.member_id,sl.date_from,sl.date_to from db_restaurant_basic as b left join db_restaurant_detail as d on b.member_id=d.member_id left join db_category as c on d.cat_id=c.cat_id left join db_subcategory as sub on d.subcat_id=sub.subcat_id left join db_special_images as sl on d.day_id=sl.day_id and d.member_id=sl.member_id where b.city='2' and d.day_id='3' and c.special='2' and b.status=1 and sub.status=1 and sl.date_from ='' and sl.date_to ='' ORDER BY b.member_id DESC 

請幫我解決這個錯誤。

Answer 1

您應該僅通過查詢結束分配秩序不內的每個選擇
並在不同的表使用正確的別名具有相同名稱的列

select 
    b.member_id as b_member_id 
    ,b.rest_name 
    ,b.city 
    ,b.proviance 
    ,b.postal 
    ,b.address 
    ,b.country 
    ,b.person 
    ,b.mobile 
    ,b.url 
    ,b.status 
    ,b.premium 
    ,b.image 
    ,b.business_phone_no 
    ,b.email 
    ,b.multiple_image 
    ,b.latitude 
    ,b.longitude 
    ,b.quadrant 
    ,d.member_id as d_member_id 
    ,d.day_id 
    ,d.cat_id 
    ,d.subcat_id 
    ,d.comment 
    ,d.city 
    ,d.special_images 
    ,c.cat_id 
    ,c.special 
    ,sub.subcat_id 
    ,sub.subcat_name 
    ,sub.status 
    ,sl.day_id 
    ,sl.member_id 
    ,sl.date_from 
    ,sl.date_to 
from db_restaurant_basic as b 
left join db_restaurant_detail as d on b.b_member_id=d.d_member_id 
left join db_category as c on d.cat_id=c.cat_id 
left join db_subcategory as sub on d.subcat_id=sub.subcat_id 
left join db_special_images as sl on d.day_id=sl.day_id and d.member_id=sl.member_id 
where b.city='2' 
    and d.day_id='3' 
    and c.special='2' 
    and sl.date_from <='2016-10-26' 
    and sl.date_to >= '2016-10-26' 
    and b.status=1 
    and sub.status=1 
    and sl.date_from !='' 
    and sl.date_to !='' 

UNION ALL 

SELECT 
    b.member_id 
    ,b.rest_name 
    ,b.city 
    ,b.proviance 
    ,b.postal 
    ,b.address 
    ,b.country 
    ,b.person 
    ,b.mobile 
    ,b.url 
    ,b.status 
    ,b.premium 
    ,b.image 
    ,b.business_phone_no 
    ,b.email 
    ,b.multiple_image 
    ,b.latitude 
    ,b.longitude 
    ,b.quadrant 
    ,d.member_id 
    ,d.day_id 
    ,d.cat_id 
    ,d.subcat_id 
    ,d.comment 
    ,d.city 
    ,d.special_images 
    ,c.cat_id 
    ,c.special 
    ,sub.subcat_id 
    ,sub.subcat_name 
    ,sub.status 
    ,sl.day_id 
    ,sl.member_id 
    ,sl.date_from 
    ,sl.date_to 
from db_restaurant_basic as b 
left join db_restaurant_detail as d on b.member_id=d.member_id 
left join db_category as c on d.cat_id=c.cat_id 
left join db_subcategory as sub on d.subcat_id=sub.subcat_id 
left join db_special_images as sl on d.day_id=sl.day_id and d.member_id=sl.member_id 
where b.city='2' 
    and d.day_id='3' 
    and c.special='2' 
    and b.status=1 
    and sub.status=1 a 
    nd sl.date_from ='' 
    and sl.date_to ='' 
ORDER BY b_member_id DESC