SQL 功能类似搜索问题

Question

请帮助修复我的 sql 功能！

在我的 sql 函数中我有一个临时的 tables

传递给函数@searchstring 的参数----“'%carrots%' AND tmp.ItemDescription like '%baby%'”

Declare  @tempvalues table  (itemdescription nvarchar(max))

@tempvalues  VALUES

-----------------------

CARROTS, BABY, CLASS I, FRESH
CARROTS, BABY, FROZEN
CARROTS, CLASS I, FRESH

------------------

所以在函数中，我传递值以使用类似查询搜索数据，如果匹配，我需要将数据插入另一个 table 喜欢

在温度以下table如果它匹配我需要插入1作为相应的行

Declare  @tempfinal table  (itemdescription nvarchar(max),matchcontains int)

**insert into @tempfinal select ItemDescription,'1'as matchcontains  from  @tempvalues tmp where tmp.ItemDescription like @searchstring**

但没有在@tempfinal 中插入任何内容

我需要搜索所有匹配的词

请大家帮忙解决

示例函数

CREATE FUNCTION dbo.UDF_PredictItems_testfreetextdemo  
(  
 @FTSExpression    NVARCHAR(4000) 
)
RETURNS @Result TABLE   
(

  itemdescription  NVARCHAR(4000),
  matchcontains int

)  
AS  
BEGIN           
 Declare  @tempvalues table  (itemdescription nvarchar(max))                    
 insert into @tempvalues values ('CARROTS, BABY, CLASS I, FRESH') ,
 ('CARROTS, BABY, FROZEN 2.5 KGS') ,
 ('CAKE, CARROT, FROZEN 1 KGS') ,
 ('CARROTS, CLASS I, FRESH')  


 declare @containExpression nvarchar(max)
 set @containExpression =replace(replace(replace(@FTSExpression,' ','<>'),'><',''),'<>',' ') 
 set @containExpression=(Select  replace(@FTSExpression, ' ', '%'))   
 set @containExpression=(Select  replace(@containExpression, ' ', ' AND tmp.ItemDescription like ')) 
 set @containExpression=(select '''%'+@containExpression+'%''')  




  declare @tempfinal table(ItemDescription nvarchar(max),matchcontains int)      
  insert into @tempfinal select ItemDescription,CAST('1' AS INT) as matchcontains  from  @tempvalues tmp where tmp.ItemDescription like @containExpression    

   insert into @Result ( itemdescription,matchcontains )           
   select  itemdescription,0 from @tempfinal

   return;
   END

调用函数

SELECT * from UDF_PredictItems_testfreetextdemo('Carrots baby')

Answer 1

您的查询是

INSERT INTO @tempfinal
SELECT 
   ItemDescription,
  '1' as matchcontains
FROM @tempvalues tmp
WHERE tmp.ItemDescription like @searchstring**

问题在于您试图将 char 插入 int 字段。所以试试这个：

INSERT INTO @tempfinal
SELECT 
   ItemDescription,
  CAST('1' AS INT) as matchcontains
FROM @tempvalues tmp
WHERE tmp.ItemDescription like @searchstring**

或者

INSERT INTO @tempfinal
SELECT 
   ItemDescription,
  1 as matchcontains
FROM @tempvalues tmp
WHERE tmp.ItemDescription like @searchstring**

Answer 2

我已经检查过 LIKE 您描述的运算符对我来说工作正常。

Declare  @tempvalues table  (itemdescription nvarchar(max))

INSERT INTO @tempvalues  
VALUES ('CARROTS'), ('BABY'), ('CLASS I'), ('FRESH'),('CARROTSI'), ('BABYI'), ('FROZENI'), ('CARROTSI'), ('CLASS I'), ('FRESH')

DECLARE @searchstring NVARCHAR(50) = '%carrots%'
SELECT * FROM @tempvalues WHERE itemdescription LIKE @searchstring

输出：

CARROTS

CARROTSI

CARROTSI

查看我的结果here

已更新

所以问题不在 LIKE 运算符中，正如@Antonios Katopodis 的回答，您应该插入 int 而不是 varchar type

修复后更新

你的问题在这里

set @containExpression=(select '''%'+@containExpression+'%''')

你应该通过这种方式修复

set @containExpression=(select '%'+@containExpression+'%')

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