Question

我正在使用mysql数据库在同一个城市存储公司。我通过使用下面的查询来获取它们。但它并没有像我希望的那样对结果进行排序。我希望得到的公司能够这样订购：首要的是距离低于<6> 的公司，这些公司必须按 FIELD（sectorid，.... ）参数，第二优先级是距离大于6KM且公司必须以相同方式订购的公司（使用FIELD参数）

但我们无法找到解决问题的方法。我在下面显示了正确的结果和我们的查询。如果有人指出我正确的方向，我会很高兴

示例结果必须是这样的：

Company Name:      Distance:        SectorID:
CompanyA              3               10
CompanyB              2               11
CompanyC              4               13
CompanyX              8               10
CompanyY              7               11
CompanyZ              9               13

我们当前的查询：

SELECT companies.id,
       companies.name,
       companies.summary,
       companies.ratingScore,
       companies.companyLogo,
       companies.sectorId,
       companies.lattitude,
       companies.longitude,
       companies.address,
       company_photos.photoUrl,

  (SELECT EXISTS
     (SELECT 1
      FROM favorites
      WHERE favorites.companyId = companies.id
        AND userId = 109)) AS favorited,

  (SELECT COUNT(*)
   FROM ratings
   WHERE companies.id = ratings.companyId
     AND ratings.isReviewed = 1) AS comments,
       (ACOS(SIN(RADIANS(41.212641))*SIN(RADIANS(lattitude))+COS(RADIANS(41.212641))*COS(RADIANS(lattitude))*COS(RADIANS(longitude)-RADIANS(29.020058))) *6371) AS distance
FROM companies
LEFT JOIN company_photos ON company_photos.companyId = companies.id
AND company_photos.photoOrder = 0
WHERE companies.isActivated = 1
  AND companies.isReviewed = 1
  AND companies.isCustomer = 1
  AND companies.isBlocked = 0
ORDER BY FIELD (sectorId, 10, 11, 13, 7, 12, 2, 15, 17), distance

我得到的结果是：

Company Name:      Distance:        SectorID:
CompanyA              3               10
CompanyX              8               10
CompanyB              2               11
CompanyY              7               11
CompanyC              4               13
CompanyZ              9               13

由于

Answer 1

order by case when distance<6 then 1 else 2 end, --sorts distance < 6 first and then distance > 6
sectorid --with in each group specified above sorting is on sectorid

mysql多列顺序

1 个答案: