WHERE CONTAINS 没有 return 数据

Question

包含和喜欢不适用于我的变量。

我尝试使用关键字 LIKE 和 CONTAINS

@ItemSupplied nvarchar (50)
as
begin
    set nocount on;

    SELECT [Name]
    FROM Suppliers
    where CONTAINS(ItemSupplied, @ItemSupplied)
    order by [Name];
end

我也试过了

@ItemSupplied nvarchar (50)
as
begin
    set nocount on;

    SELECT [Name]
    FROM Suppliers
    where ItemSupplied LIKE @ItemSupplied
    order by [Name];
end

我也想知道供应特定物品的供应商的名称，即使他们也供应其他物品。

Answer 1

如果你想使用 like 和一个变量，你可以使用 concat 来构建一个有效的 like 模式

 SELECT [Name]
 FROM Suppliers 
 where ItemSupplied LIKE concat('%', @ItemSupplie, '%')
 order by [Name];

Answer 2

刚刚在 MSSQL 中对此进行了测试

   DECLARE @ItemSupplied nvarchar (50)

     SELECT [Name]
     FROM Suppliers 
     WHERE ItemSupplied LIKE '%' + LTRIM(RTRIM(@ItemSupplied)) + '%'
     ORDER BY [Name];

WHERE CONTAINS 没有 return 数据

WHERE CONTAINS does not return data

c#

sql-server

dapper