Question

我有一个存储过程，我想在其中允许*，以便用户：

类型t *然后更高，茶返回
类型*或。然后返回所有结果
键入t然后返回所有t的结果，如ptv，tall，sit

我的存储过程是这样的：

ALTER PROCEDURE [dbo].[SearchEntityDataNew]
    @SearchText varchar(100) = '*'

AS
BEGIN
    SELECT 'Entity' as pagetype,EntityID,EntityData,EntityDataID 
    FROM EntityData 
    WHERE  EntityData LIKE '%' + @SearchText+ '%'
    OR @SearchText = '*'

    union all

    SELECT 'Property' as pagetype,PropertyID,PropertyValue,EntityDataID  
    FROM EntityDataProperty 
    WHERE  PropertyValue LIKE '%' + @SearchText+ '%'
    OR @SearchText = '*'
END

Answer 1

你能否使用：

WHERE  PropertyValue LIKE REPLACE(@SearchText, '*', '%');

以下测试：

-- SAMPLE TABLE
DECLARE @T TABLE (A VARCHAR(100));
INSERT @T VALUES ('tea'), ('test'), ('foo'), ('bar'), ('foobar');

-- TEST USING WILDCARD AT END
DECLARE @SearchText VARCHAR(100) = 't*';
SELECT  *
FROM    @T
WHERE   A LIKE REPLACE(@SearchText, '*', '%');

-- TEST USING ONLY WILD CARD
SET @SearchText = '*';
SELECT  *
FROM    @T
WHERE   A LIKE REPLACE(@SearchText, '*', '%');

--TEST USING WILD CARD AT START
SET @SearchText = '*bar';
SELECT  *
FROM    @T
WHERE   A LIKE REPLACE(@SearchText, '*', '%');

--TEST USING WILD CARD AT START AND END
SET @SearchText = '*a*';
SELECT  *
FROM    @T
WHERE   A LIKE REPLACE(@SearchText, '*', '%');

输出：

-- Wild card at end: "t*"
tea
test

-- Wild card only: "*"
tea
test
foo
bar
foobar

-- Wild card at start: "*bar"
bar
foobar

-- wild card at start and end: "*a*"
tea
bar
foobar

修改

我刚刚重新阅读了你的问题，并且看到了当没有外卡字符在开头和结尾都假定外卡时的要求，在这种情况下你可以将它添加到程序的开头：

IF CHARINDEX('*', @SearchText) = 0 SET @SearchText = '%' + @SearchText + '%' ELSE SET @SearchText = REPLACE(@SearchText, '*', '%')

然后只需使用

WHERE PropertyValue LIKE @SearchText

在SQL查询中允许*

1 个答案: