我需要根据汽车关键字搜索返回一个不同的记录列表，例如：“Alfa 147”
问题是，因为我有 3 辆“阿尔法”汽车，它返回 1 + 3 条记录（阿尔法和 147 结果似乎是 1，阿尔法结果似乎是 3）
编辑：
SQL-Server 查询看起来像这样：
SELECT DISTINCT c.Id, c.Name /*, COUNT(Number of Ads in the KeywordAdCategories table with those 2 keywords) */
FROM Categories AS c
INNER JOIN KeywordAdCategories AS kac ON kac.Category_Id = c.Id
INNER JOIN KeywordAdCategories AS kac1 ON kac.Ad_Id = kac1.Ad_Id AND kac1.Keyword_Id = (SELECT Id FROM Keywords WHERE Name = 'ALFA')
INNER JOIN KeywordAdCategories AS kac2 ON kac1.Ad_Id = kac2.Ad_Id AND kac2.Keyword_Id = (SELECT Id FROM Keywords WHERE Name = '147')
我的 LINQ 查询是：
var query = from k in keywordQuery where splitKeywords.Contains(k.Name)
join kac in keywordAdCategoryQuery on k.Id equals kac.Keyword_Id
join c in categoryQuery on kac.Category_Id equals c.Id
join a in adQuery on kac.Ad_Id equals a.Id
select new CategoryListByKeywordsDetailDto
{
Id = c.Id,
Name = c.Name,
SearchCount = keywordAdCategoryQuery.Where(s => s.Category_Id == c.Id).Where(s => s.Keyword_Id == k.Id).Distinct().Count(),
ListController = c.ListController,
ListAction = c.ListAction
};
var searchResults = new CategoryListByBeywordsListDto();
searchResults.CategoryListByKeywordsDetails = query.Distinct().ToList();
实体是：
public class Keyword
{
// Primary properties
public int Id { get; set; }
public string Name { get; set; }
}
// Keyword Sample Data:
// 1356 ALFA
// 1357 ROMEO
// 1358 145
// 1373 147
public class Category
{
// Primary properties
public int Id { get; set; }
public string Name { get; set; }
}
// Category Sample Data
// 1 NULL 1 Carros
// 2 NULL 1 Motos
// 3 NULL 2 Oficinas
// 4 NULL 2 Stands
// 5 NULL 1 Comerciais
// 8 NULL 1 Barcos
// 9 NULL 1 Máquinas
// 10 NULL 1 Caravanas e Autocaravanas
// 11 NULL 1 Peças e Acessórios
// 12 1 1 Citadino
// 13 1 1 Utilitário
// 14 1 1 Monovolume
public class KeywordAdCategory
{
[Key]
[Column("Keyword_Id", Order = 0)]
public int Keyword_Id { get; set; }
[Key]
[Column("Ad_Id", Order = 1)]
public int Ad_Id { get; set; }
[Key]
[Column("Category_Id", Order = 2)]
public int Category_Id { get; set; }
}
// KeywordAdCategory Sample Data
// 1356 1017 1
// 1356 1018 1
// 1356 1019 1
// 1357 1017 1
// 1357 1018 1
// 1357 1019 1
// 1358 1017 1
// 1373 1019 1
public class Ad
{
// Primary properties
public int Id { get; set; }
public string Title { get; set; }
public string TitleStandard { get; set; }
public string Version { get; set; }
public int Year { get; set; }
public decimal Price { get; set; }
// Navigation properties
public Member Member { get; set; }
public Category Category { get; set; }
public IList<Feature> Features { get; set; }
public IList<Picture> Pictures { get; set; }
public IList<Operation> Operations { get; set; }
}
public class AdCar : Ad
{
public int Kms { get; set; }
public Make Make { get; set; }
public Model Model { get; set; }
public Fuel Fuel { get; set; }
public Color Color { get; set; }
}
// AdCar Sample Data
// 1017 Alfa Romeo 145 1.6TDI 2013 ALFA ROMEO 145 1.6TDI 2013 12 2 1.6TDI 1000 1 2013 1 20000,0000 2052 AdCar
// 1018 Alfa Romeo 146 1.6TDI 2013 ALFA ROMEO 146 1.6TDI 2013 12 2 5 1.6TDI 1000 2 2013 1 20000,0000 2052 AdCar
// 1019 Alfa Romeo 147 1.6TDI 2013 ALFA ROMEO 147 1.6TDI 2013 12 2 6 1.6TDI 1000 3 2013 1 20000,0000 2052 AdCar
我期望搜索“ALFA”的结果是“Cars: 3”，搜索“ALFA 147”的结果是“Cars: 1”，实际上我得到的结果是“Cars: 1 \n Cars: 3”