使用 t-sql 组合“LIKE”和“IN”
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Combination of 'LIKE' and 'IN' using t-sql
提问by Panagiotis Lefas
How can I do this kind of selection:
我该如何进行这种选择:
SELECT *
FROM Street
WHERE StreetName LIKE IN ('% Main Street', 'foo %')
Please don't tell me that I can use OR
because these actually comes from a query.
请不要告诉我我可以使用,OR
因为这些实际上来自查询。
采纳答案by Martin Smith
There is no combined LIKE
and IN
syntax but you can use LIKE
to JOIN
onto your query as below.
有没有合并LIKE
和IN
语法,但你可以使用LIKE
到JOIN
到您的查询,如下。
;WITH Query(Result) As
(
SELECT '% Main Street' UNION ALL
SELECT 'foo %'
)
SELECT DISTINCT s.*
FROM Street s
JOIN Query q ON StreetName LIKE q.Result
Or to use your example in the comments
或者在评论中使用您的示例
SELECT DISTINCT s.*
FROM Street s
JOIN CarStreets cs ON s.StreetName LIKE cs.name + '%'
WHERE cs.Streets = 'offroad'
回答by James Hill
You don't have a lot of choices here.
你在这里没有很多选择。
SELECT * FROM Street Where StreetName LIKE '% Main Street' OR StreetName LIKE 'foo %'
If this is part of an existing, more complicated query (which is the impression I'm getting), you couldcreate a table value function that does the checking for you.
如果这是现有的、更复杂的查询的一部分(这是我得到的印象),您可以创建一个表值函数来为您进行检查。
SELECT * FROM Street Where StreetName IN (dbo.FindStreetNameFunction('% Main Street|foo %'))
I'd recommend using the simplest solution (the first). If this is nested inside a larger, more complicated query, post it and we'll take a look.
我建议使用最简单的解决方案(第一个)。如果它嵌套在一个更大、更复杂的查询中,请将其发布,我们将查看。
回答by bzamfir
You can resort to Dynamic SQL and wrapping up all in a stored procedure.
您可以求助于动态 SQL 并将所有内容包装在存储过程中。
If you get the LIKE IN param in a string as tokens with a certain separator, like
如果您将字符串中的 LIKE IN 参数作为具有特定分隔符的标记,例如
'% Main Street,foo %,Another%Street'
first you need to create a function that receives a list of LIKE "tokens" and returns a table of them.
首先,您需要创建一个接收 LIKE “令牌”列表并返回它们的表的函数。
CREATE FUNCTION [dbo].[SplitList]
(
@list nvarchar(MAX),
@delim nvarchar(5)
)
RETURNS @splitTable table
(
value nvarchar(50)
)
AS BEGIN
While (Charindex(@delim, @list)>0) Begin
Insert Into @splitTable (value)
Select ltrim(rtrim(Substring(@list, 1, Charindex(@delim, @list)-1)))
Set @list = Substring(@list, Charindex(@delim, @list)+len(@delim), len(@list))
End
Insert Into @splitTable (value) Select ltrim(rtrim(@list))
Return
END
Then in the SP you have the following code
然后在SP中你有以下代码
declare
@sql nvarchar(MAX),
@subWhere nvarchar(MAX)
@params nvarchar(MAX)
-- prepare the where sub-clause to cover LIKE IN (...)
-- it will actually generate where sub clause StreetName Like option1 or StreetName Like option2 or ...
set @subWhere = STUFF(
(
--(**)
SELECT ' OR StreetName like ''' + value + '''' FROM SplitList('% Main Street,foo %,Another%Street', ',')
FOR XML PATH('')
), 1, 4, '')
-- create the dynamic SQL
set @sql ='select * from [Street]
where
(' + @subWhere + ')
-- and any additional query params here, if needed, like
AND StreetMinHouseNumber = @minHouseNumber
AND StreetNumberOfHouses between (@minNumberOfHouses and @maxNumberOfHouses)'
set @params = ' @minHouseNumber nvarchar(5),
@minNumberOfHouses int,
@minNumberOfHouses int'
EXECUTE sp_executesql @sql, @params,
@minHouseNumber,
@minNumberOfHouses,
@minNumberOfHouses
Of course, if you have your LIKE IN parameters in another table or you gather it through a query, you can replace that in line (**)
当然,如果你在另一个表中有你的 LIKE IN 参数或者你通过查询收集它,你可以在行中替换它 (**)
回答by breusshe
I believe I can clarify what he is looking for, but I don't know the answer. I'll use my situation to demonstrate. I have a table with a column called "Query" that holds SQL queries. These queries sometimes contain table names from one of my databases. I need to find all Query rows that contain table names from a particular database. So, I can use the following code to get the table names:
我相信我可以澄清他在寻找什么,但我不知道答案。我会用我的情况来证明。我有一个表,其中包含一个名为“查询”的列,其中包含 SQL 查询。这些查询有时包含来自我的数据库之一的表名。我需要从特定数据库中查找包含表名的所有查询行。因此,我可以使用以下代码来获取表名:
SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
I'm trying to use a WHERE IN clause to identify the Query rows that contain the table names I'm interested in:
我正在尝试使用 WHERE IN 子句来识别包含我感兴趣的表名的查询行:
SELECT *
FROM [DatasourceQuery]
WHERE Query IN LIKE
(
SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
)
I believe the OP is trying to do something like that.
我相信 OP 正在尝试做这样的事情。
回答by Samuel Surya
This is my way:
这是我的方式:
First create a table function:
首先创建一个表函数:
create function [splitDelimeter](@str nvarchar(max), @delimeter nvarchar(10)='*')
returns @r table(val nvarchar(max))
as
begin
declare @x nvarchar(max)=@str
set @x='<m>'+replace(@x, @delimeter, '</m><m>')+'</m>'
declare @xx xml=cast(@x as xml)
insert @r(val)
SELECT Tbl.Col.value('.', 'nvarchar(max)') id
FROM @xx.nodes('/m') Tbl(Col)
return
end
Then split the search text with your preference delimeter. After that you can do your select with left join as below:
然后使用您的首选项分隔符拆分搜索文本。之后,您可以使用左连接进行选择,如下所示:
declare @s nvarchar(max)='% Main Street*foo %'
select a.* from street a
left join gen.splitDelimeter(@s, '*') b
on a.streetname like b.val
where val is not null