在SQL中根据"名字"+"姓氏"过滤行

Question

我的数据库中有一个用户表,其中包含两列FirstName和LastName.现在在我的前端有一个文本框来过滤掉这个表中的用户.假设我以输入参数"@SEARCHKEYWORD"的形式从前端获取输入.我在下面创建了一个示例:

DECLARE @Test TABLE
([ID] INT IDENTITY,
[FNAME] NVARCHAR(100),
[LNAME] NVARCHAR(100)
)
INSERT INTO @Test( FNAME, LNAME )
SELECT 'John','Resig' UNION ALL
SELECT 'Dave','Ward' UNION ALL
SELECT 'Peter','Smith' UNION ALL
SELECT 'Dave','Smith' UNION ALL
SELECT 'Girija','Acharya'  UNION ALL
SELECT  'Devendra', 'Gujel' UNION ALL
SELECT 'Arjit', 'Gupta'

DECLARE @SEARCHKEYWORD NVARCHAR(100)

SELECT * FROM @Test WHERE FNAME +' '+ LNAME LIKE @SEARCHKEYWORD

即到目前为止,我已经想过这个查询来过滤掉行,但它没有给出所需的结果:

 
SELECT * FROM @Test WHERE FNAME +' '+ LNAME LIKE @SEARCHKEYWORD

Here are the desired outputs which I needed for the inputs mentioned below:

--WHEN  @SEARCHKEYWORD='John Resig'
--Desired OUTPUT: the row which contains 'John','Resig' 

--WHEN  @SEARCHKEYWORD='Ac'
--Desired OUTPUT: the row which contains 'Girija','Acharya' 

--WHEN  @SEARCHKEYWORD='Smith'
--Desired OUTPUT: the row which contains 'Peter','Smith' and 'Dave','Smith'

--WHEN  @SEARCHKEYWORD='g'
--Desired OUTPUT: the row which contains  'Devendra', 'Gujel' and 'Arjit', 'Gupta'  

--WHEN  @SEARCHKEYWORD='Smith'
--Desired OUTPUT: the row which contains 'Peter','Smith' and 'Dave','Smith'

Answer 1

将所有这些放在一起

SELECT * FROM @Test WHERE (FName like '%' + @SEARCHKEYWORD + '%') OR (LName like '%' + @SEARCHKEYWORD + '%') OR (FName + ' ' + LName like '%' + @SEARCHKEYWORD + '%')