sql表值函数

[油泼白菜]

CREATE function [dbo].[GetProductList](@param nvarchar(500))

@param 可以传递一段查询语句或者是一些where查询条件（u.Name = 'admin'）？

如果不行。
条件：需查询的表个数不固定，where查询条件也不固定。 我只需要返回一个talbe，函数该怎么写

[快溜]

函数实现不了，用存储过程。

[dawugui]

你这个用函数貌似不妥,因为在函数中不允许使用动态SQL.
建议使用存储过程.在存储过程中拼接SQL语句,然后动态执行并返回你需要的结果.

[dawugui]

可参考以下内容:

--1. 使用 EXEC 实现的动态参数存储过程
CREATE PROC p_test
@para1 varchar(10)=null,
@para2 varchar(10)=null,
@para3 varchar(10)=null,
@para4 varchar(10)=null
AS
SET NOCOUNT ON
DECLARE @sql varchar(8000)
SET @sql='SELECT * FROM tbname WHERE 1=1'
IF @para1 IS NOT NULL
    SET @sql=@sql+' AND col1='''+@para1+''''
IF @para2 IS NOT NULL
    SET @sql=@sql+' AND col2='''+@para2+''''
IF @para3 IS NOT NULL
    SET @sql=@sql+' AND col3='''+@para3+''''
IF @para4 IS NOT NULL
    SET @sql=@sql+' AND col4='''+@para4+''''
EXEC(@sql)
GO


/*======================================================*/

--2. 使用 sp_executesql 实现的动态参数存储过程
CREATE PROC p_test
@para1 varchar(10)=null,
@para2 datetime=null,
@para3 varchar(10)=null,
@para4 int=null
AS
SET NOCOUNT ON
DECLARE @sql nvarchar(4000)
SET @sql='SELECT * FROM tbname WHERE 1=1'
    +CASE WHEN @para1 IS NULL THEN '' ELSE ' AND col1=@para1' END
    +CASE WHEN @para2 IS NULL THEN '' ELSE ' AND col2=@para2' END
    +CASE WHEN @para3 IS NULL THEN '' ELSE ' AND col3=@para3' END
    +CASE WHEN @para4 IS NULL THEN '' ELSE ' AND col4=@para4' END
EXEC sp_executesql @sql,N'
    @para1 varchar(10)=null,
    @para2 datetime=null,
    @para3 varchar(10)=null,
    @para4 int=null
',@para1,@para2,@para3,@para4
GO


/*======================================================*/

--3. 不使用动态 Transact-SQL 语句实现的动态参数存储过程
CREATE PROC p_test
@para1 varchar(10)=null,
@para2 datetime=null,
@para3 varchar(10)=null,
@para4 int=null
AS
SET NOCOUNT ON
SELECT * FROM tbname 
WHERE (@para1 IS NULL OR col1=@para1)
    AND (@para2 IS NULL OR col2=@para2)
    AND (@para3 IS NULL OR col3=@para3)
    AND (@para4 IS NULL OR col4=@para4)

[油泼白菜]

1，2 楼

select p.ProductID, p.Name, p.BuyPrice, p.SalePrice, p.ProductTypeID from Product p 
inner join Supplier sr on sr.SupplierID = p.SupplierID 
inner join [User] ur on ur.UserID = p.BuyerID 
inner join ProductType pt on pt.ProductTypeID = p.ProductTypeID 
inner join ProductPattern pp on pp.ProductPatternID = p.ProductPatternID 
inner join ProductStyle ps on ps.ProductStyleID = p.ProductStyleID 
inner join ProductSex px on px.ProductSexID = p.ProductSexID 
inner join ProductPosition pn on pn.ProductPositionID = p.ProductPositionID 
inner join ProductSeries pss on pss.ProductSeriesID = p.ProductSeriesID 
inner join ProductMaterial pm on pm.ProductMaterialID = p.ProductMaterialID 
inner join ProductImportant pit on pit.ProductImportantID = p.ProductImportantID 
inner join ProductSeason psn on psn.ProductSeasonID = p.ProductSeasonID 
inner join ProductUnit pnt on pnt.ProductUnitID = p.ProductUnitID 
where p.ProductID = p.ProductID and sr.Name = '德尔惠公司' 
and ur.Name = 'purchase' and pn.Name = '上身' and pit.Name = '主销款' 
and pnt.Name = '顶' and ps.Name = '正装'

where 后面条件不固定， 存储怎么写，

[油泼白菜]

一个小项目，不想做的那么复杂， 谢谢两位了，，，

[唐诗三百首]

create proc GetProductList
@param nvarchar(500)
as
begin
 declare @sql nvarchar(4000)
 select @sql=N'select p.ProductID, p.Name, p.BuyPrice, p.SalePrice, p.ProductTypeID from Product p 
   inner join Supplier sr on sr.SupplierID = p.SupplierID 
   inner join [User] ur on ur.UserID = p.BuyerID 
   inner join ProductType pt on pt.ProductTypeID = p.ProductTypeID 
   inner join ProductPattern pp on pp.ProductPatternID = p.ProductPatternID 
   inner join ProductStyle ps on ps.ProductStyleID = p.ProductStyleID 
   inner join ProductSex px on px.ProductSexID = p.ProductSexID 
   inner join ProductPosition pn on pn.ProductPositionID = p.ProductPositionID 
   inner join ProductSeries pss on pss.ProductSeriesID = p.ProductSeriesID 
   inner join ProductMaterial pm on pm.ProductMaterialID = p.ProductMaterialID 
   inner join ProductImportant pit on pit.ProductImportantID = p.ProductImportantID 
   inner join ProductSeason psn on psn.ProductSeasonID = p.ProductSeasonID 
   inner join ProductUnit pnt on pnt.ProductUnitID = p.ProductUnitID '+@param
 exec(@sql)
end


exec GetProductList @param='where p.ProductID = p.ProductID and sr.Name = ''德尔惠公司'' 
and ur.Name = ''purchase'' and pn.Name = ''上身'' and pit.Name = ''主销款'' 
and pnt.Name = ''顶'' and ps.Name = ''正装'''