[英]How can we use IN SQL Statement into SQL SERVER Function
How can we use IN Statement into sql server function. 我们如何使用IN语句转换成sql服务器功能。
Here is my code: 这是我的代码:
ALTER FUNCTION [dbo].[getMentalTable]
(
@Code VARCHAR(50),
@Statu VARCHAR(10),
@donem1 VARCHAR(10),
@donem2 VARCHAR(10),
@principal VARCHAR(10)
)
RETURNS TABLE
AS
RETURN
(
SELECT
m.Code,
m.CodeType,
k.TANIM,
kart.DonemAdi,
COUNT(DISTINCT m.DRGPatientId) AS VakaSayısı
FROM
TIGTest.dbo.MentalBozuklukVerileriOzet m,
TIGTest.dbo.KART_DONEM kart,
TIGTest.dbo.Hospitals h,
KODLAR k
WHERE m.Code IN(@Code)
AND kart.DonemKodu = m.DonemKodu
AND h.HospitalCode = m.HospitalCode
AND h.Statu='D'
AND m.DonemKodu BETWEEN @donem1 AND @donem2
AND k.KOD2=m.Code
AND m.IsPrincipal=@principal
GROUP BY
kart.DonemAdi,
m.DonemKodu,
m.Code,
m.CodeType,
k.TANIM,
kart.DonemAdi
)
I want to set multiple parameters in @Code
variable.So this using cant work.How can we use IN statement in sql server functions. 我想在
@Code
变量中设置多个参数, @Code
这不能使用。我们如何在SQL Server函数中使用IN语句。
Thanks . 谢谢 。
Try this(considering that @code will have CSV)..U need to convert your CSV into rows to compare with IN operator 试试这个(考虑到@code将具有CSV)。您需要将CSV转换为与IN运算符进行比较的行
....
WHERE m.Code IN (SELECT Split.a.value('.', 'VARCHAR(100)')
FROM (SELECT Cast ('<M>' + Replace(@Code, ',', '</M><M>') + '</M>' AS XML) AS code) AS A
CROSS APPLY code.nodes ('/M') AS Split(a))
AND...
One method is to use dynamic SQL. 一种方法是使用动态SQL。 That is, embed the list of codes in a string.
即,将代码列表嵌入字符串中。
Another is to use a CTE to split the list into a table and use a join
or in
. 另一种方法是使用CTE将列表拆分成表并使用
join
或in
。
A third method that is simpler to write, but cannot take advantage of an index on m.Code
, is: 第三种更易于编写但无法利用
m.Code
上的索引的m.Code
是:
WHERE ',' + @Code + ',' like '%,' + m.Code + ',%'
This uses like
for this purpose. 为此使用
like
这样。
Have you considered a table-valued parameter? 您是否考虑过表值参数? Passing a list in a single parameter (delimited list or XML) will necessitate parsing on the server side and is less efficient than a TVP.
在单个参数(定界列表或XML)中传递列表将需要在服务器端进行解析,并且效率不如TVP。 Below is a TVP example.
下面是一个TVP示例。
CREATE TYPE CodesType AS TABLE(
Code varchar(50) NOT NULL PRIMARY KEY
);
GO
CREATE FUNCTION [dbo].[getMentalTable]
(
@Codes dbo.CodesType READONLY,
@Statu VARCHAR(10),
@donem1 VARCHAR(10),
@donem2 VARCHAR(10),
@principal VARCHAR(10)
)
RETURNS TABLE
AS
RETURN
(
SELECT
m.Code,
m.CodeType,
k.TANIM,
kart.DonemAdi,
COUNT(DISTINCT m.DRGPatientId) AS VakaSayısı
FROM
TIGTest.dbo.MentalBozuklukVerileriOzet m,
TIGTest.dbo.KART_DONEM kart,
TIGTest.dbo.Hospitals h,
KODLAR k
WHERE m.Code IN(SELECT Code FROM @Codes)
AND kart.DonemKodu = m.DonemKodu
AND h.HospitalCode = m.HospitalCode
AND h.Statu='D'
AND m.DonemKodu BETWEEN @donem1 AND @donem2
AND k.KOD2=m.Code
AND m.IsPrincipal=@principal
GROUP BY
kart.DonemAdi,
m.DonemKodu,
m.Code,
m.CodeType,
k.TANIM,
kart.DonemAdi
);
GO
DECLARE @Codes dbo.CodesType;
INSERT INTO @Codes VALUES('1'), ('2');
SELECT *
FROM [dbo].[getMentalTable](@Codes,'a','b','c','d');
GO
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