Sql server 使用逗号分隔参数的sql搜索查询帮助
我正在寻找类似的内容,但无法找到编写查询的最佳方法:Sql server 使用逗号分隔参数的sql搜索查询帮助,sql-server,tsql,search,Sql Server,Tsql,Search,我正在寻找类似的内容,但无法找到编写查询的最佳方法: SELECT DISTINCT CategoryID FROM tbl_Categories c INNER JOIN mappingTable mp ON c.CategoryID = mp.CategoryID INNER JOIN SubCategories sc ON mp.SubCategoryID = sc.SubCategoryID WHERE sc.SubcategoryID IN ALL (234,245,645)
SELECT DISTINCT CategoryID FROM tbl_Categories c INNER JOIN
mappingTable mp ON c.CategoryID = mp.CategoryID INNER JOIN
SubCategories sc ON mp.SubCategoryID = sc.SubCategoryID
WHERE sc.SubcategoryID IN ALL (234,245,645)
我目前正在构建一个动态查询,因为ID是作为逗号分隔的字符串“234245645”传入的,但我们都知道,没有all这样的东西。基本上,我想返回列表中包含所有子类别的所有类别。希望这是有意义的 您可以这样做:
解决方案1
解决方案2:另一种可能有效的方法:
您可以这样做:
解决方案1
解决方案2:另一种可能有效的方法:
您可以编写自己的拆分函数:
CREATE FUNCTION [dbo].[Split]
(
@ItemList NVARCHAR(MAX),
@delimiter CHAR(1)
)
RETURNS @IDTable TABLE (Item VARCHAR(50))
AS
BEGIN
DECLARE @tempItemList NVARCHAR(MAX)
SET @tempItemList = @ItemList
DECLARE @i INT
DECLARE @Item NVARCHAR(4000)
SET @tempItemList = REPLACE (@tempItemList, ' ', '')
SET @i = CHARINDEX(@delimiter, @tempItemList)
WHILE (LEN(@tempItemList) > 0)
BEGIN
IF @i = 0
SET @Item = @tempItemList
ELSE
SET @Item = LEFT(@tempItemList, @i - 1)
INSERT INTO @IDTable(Item) VALUES(@Item)
IF @i = 0
SET @tempItemList = ''
ELSE
SET @tempItemList = RIGHT(@tempItemList, LEN(@tempItemList) - @i)
SET @i = CHARINDEX(@delimiter, @tempItemList)
END
RETURN
END
然后,您可以加入或选择此表值用户定义函数返回的表。您可以编写自己的拆分函数:
CREATE FUNCTION [dbo].[Split]
(
@ItemList NVARCHAR(MAX),
@delimiter CHAR(1)
)
RETURNS @IDTable TABLE (Item VARCHAR(50))
AS
BEGIN
DECLARE @tempItemList NVARCHAR(MAX)
SET @tempItemList = @ItemList
DECLARE @i INT
DECLARE @Item NVARCHAR(4000)
SET @tempItemList = REPLACE (@tempItemList, ' ', '')
SET @i = CHARINDEX(@delimiter, @tempItemList)
WHILE (LEN(@tempItemList) > 0)
BEGIN
IF @i = 0
SET @Item = @tempItemList
ELSE
SET @Item = LEFT(@tempItemList, @i - 1)
INSERT INTO @IDTable(Item) VALUES(@Item)
IF @i = 0
SET @tempItemList = ''
ELSE
SET @tempItemList = RIGHT(@tempItemList, LEN(@tempItemList) - @i)
SET @i = CHARINDEX(@delimiter, @tempItemList)
END
RETURN
END
然后,您可以加入或选择从这个表值用户定义函数返回的表。由于您的问题有点不清楚,所以不确定您是否真的想要它
DECLARE @SQL NVARCHAR(MAX)
DECLARE @IDs NVARCHAR(MAX)
SET @IDs = '234,245,645'
SET @SQL = 'SELECT DISTINCT CategoryID FROM tbl_Categories c INNER JOIN
mappingTable mp ON c.CategoryID = mp.CategoryID INNER JOIN
SubCategories sc ON mp.SubCategoryID = sc.SubCategoryID
WHERE sc.SubcategoryID IN (' + @IDs + ')'
exec (@sql)
不确定你到底想要什么,因为你的问题有点不清楚
DECLARE @SQL NVARCHAR(MAX)
DECLARE @IDs NVARCHAR(MAX)
SET @IDs = '234,245,645'
SET @SQL = 'SELECT DISTINCT CategoryID FROM tbl_Categories c INNER JOIN
mappingTable mp ON c.CategoryID = mp.CategoryID INNER JOIN
SubCategories sc ON mp.SubCategoryID = sc.SubCategoryID
WHERE sc.SubcategoryID IN (' + @IDs + ')'
exec (@sql)
创建一个拆分函数,将CSV转换为表值,然后将表值函数连接到select子句以限制结果。看 快速示例要求您创建一个理货表,如下所示:
创建一个拆分函数,将CSV转换为表值,然后将表值函数连接到select子句以限制结果。看 快速示例要求您创建一个理货表,如下所示: 字符串从中拆分副本。 请注意,您需要一个尾随“,” 字符串拆分的其他实现可能更适合您,但这说明了如何处理“ALL”条件 字符串从中拆分副本。 请注意,您需要一个尾随“,”
字符串拆分的其他实现可能更适合您,但这显示了如何处理“ALL”条件。我不知道列表的计数,虽然我不知道列表的计数,但我希望它与所有@IDs匹配,虽然我希望它与所有@IDs匹配,但使用此方法拆分值并根据返回的表联接实际上有一个ALL。但我不认为这对您有什么帮助:。使用它来拆分您的值并根据返回的表进行连接实际上有一个ALL。但我不认为这对你有帮助。
-- Parameter string
declare @ParamStr varchar(100) = '234,245,645'
-- Convert param to xml
declare @XMLStr xml = convert(xml, '<r>'+replace(@ParamStr, ',', '</r><r>')+'</r>')
-- Store param values in table variable
declare @T table (ID int)
insert into @T
select r.value('.', 'int')
from @XMLStr.nodes('r') r(r)
-- Get the number of parameters
declare @ParamCount int = (select count(*) from @T)
-- Get the categoryids
select CategoryID
from mappingTable
where SubCategoryID in (select id from @T)
group by CategoryID
having count(CategoryID) = @ParamCount
CREATE FUNCTION [dbo].[TallySplit] (@Delim CHAR(1), @String VARCHAR(8000))
RETURNS TABLE AS
RETURN (
SELECT SUBSTRING(@Delim + @String + @Delim,N+1,CHARINDEX(@Delim,@Delim + @String + @Delim,N+1)-N-1) ListValue
FROM Tally
WHERE N < LEN(@Delim + @String + @Delim)
AND SUBSTRING(@Delim + @String + @Delim,N,1) = @Delim
)
GO
DECLARE @vCatIDs varchar(max)
SET @vCatIDs = '234,245,645'
SELECT DISTINCT CategoryID FROM tbl_Categories c
INNER JOIN mappingTable mp ON c.CategoryID = mp.CategoryID
INNER JOIN SubCategories sc ON mp.SubCategoryID = sc.SubCategoryID
INNER JOIN dbo.TallySplit(',',@vCatIDs) ts ON ts.ListValue = sc.SubCategoryID
DECLARE @Delimitedtext varchar(max);
DECLARE @Delimiter char(1);
SET @Delimitedtext = '234,245,645,';
SET @Delimiter = ',';
;WITH Strings(s, r)
AS
(
SELECT
SUBSTRING(@Delimitedtext,1, CHARINDEX(@Delimiter, @Delimitedtext)-1) s,
SUBSTRING(@Delimitedtext,CHARINDEX(@Delimiter, @Delimitedtext)+1, len(@Delimitedtext)) r
UNION ALL
SELECT
SUBSTRING(r,1, CHARINDEX(@Delimiter, r)-1) s,
SUBSTRING(r,CHARINDEX(@Delimiter, r)+1, len(r)) r
FROM Strings
WHERE
CHARINDEX(@Delimiter, r) > 0
)
SELECT CategoryId
FROM (
SELECT c.CategoryID
FROM tbl_Categories c
JOIN mappingTable mp
ON c.CategoryID = mp.CategoryID
JOIN SubCategories sc
ON mp.SubCategoryID = sc.SubCategoryID
WHERE sc.SubcategoryID IN (SELECT s FROM Strings)
) x
GROUP BY CategoryId
HAVING COUNT(*) = (SELECT count(*) FROM Strings)