SQL CSV作为查询结果列
我有下面的SQL,它查询单个表、单行,并以逗号分隔字符串的形式返回结果,例如SQL CSV作为查询结果列,sql,sql-server-2008,Sql,Sql Server 2008,我有下面的SQL,它查询单个表、单行,并以逗号分隔字符串的形式返回结果,例如 Forms 1, 10, 4 SQL: DECLARE @tmp varchar(250) SET @tmp = '' SELECT @tmp = @tmp + Form_Number + ', ' FROM Facility_EI_Forms_Required WHERE Facility_ID = 11 AND EI_Year=2012 -- single Facility, single year SELEC
Forms
1, 10, 4
SQL:
DECLARE @tmp varchar(250)
SET @tmp = ''
SELECT @tmp = @tmp + Form_Number + ', '
FROM Facility_EI_Forms_Required
WHERE Facility_ID = 11 AND EI_Year=2012 -- single Facility, single year
SELECT SUBSTRING(@tmp, 1, LEN(@tmp) - 1) AS Forms
Facility_EI_Forms_Required表中有三条Facility_ID=11的记录
Facility_ID EI_Year Form_Number
11 2012 1
11 2012 10
11 2012 4
Form_number是一个varchar字段
我有一个Facility表,其中包含Facility_ID和Facility_Name++
如何创建查询以查询给定年份的所有设施并生成CSV输出字段
到目前为止,我有:
DECLARE @tmp varchar(250)
SET @tmp = ''
SELECT TOP 100 A.Facility_ID, A.Facility_Name,
(
SELECT @tmp = @tmp + B.Form_Number + ', '
FROM B
WHERE B.Facility_ID = A.Facility_ID
AND B.EI_Year=2012
)
FROM Facility A, Facility_EI_Forms_Required B
但使用@tmp时会出现语法错误
我猜这对于查询来说太复杂了,可能需要一个存储过程,但我对SPs知之甚少。这可以通过嵌套查询完成吗
我尝试了一个标量值函数
ALTER FUNCTION [dbo].[sp_func_EI_Form_List]
(
-- Add the parameters for the function here
@p1 int,
@pYr int
)
RETURNS varchar
AS
BEGIN
-- Declare the return variable here
DECLARE @Result varchar
-- Add the T-SQL statements to compute the return value here
DECLARE @tmp varchar(250)
SET @tmp = ''
SELECT @tmp = @tmp + Form_Number + ', '
FROM OIS..Facility_EI_Forms_Required
WHERE Facility_ID = @p1 AND EI_Year = @pYr -- single Facility, single year
SELECT @Result = @tmp -- SUBSTRING(@tmp, 1, LEN(@tmp) - 1)-- @p1
-- Return the result of the function
RETURN @Result
END
电话
select Facility_ID, Facility.Facility_Name,
dbo.sp_func_EI_Form_List(Facility_ID,2012)
from facility where Facility_ID=11
返回
Facility_ID Facility_Name Form_List
11 Hanson Aggregates 1
因此,它只返回第一条记录,而不是全部三条记录。我做错了什么?试试下面的方法,这是一个与答案类似的方法。我希望它是正确的,因为如果没有模式和一些演示数据,我就无法尝试。也许您可以在问题中添加模式和数据: 选择不同的A.Facility\u ID、A.Facility\u Name、, 子串 选择“,”+B.Form_编号作为[文本] 根据设施要求填写表格B 其中B.Facility\u ID=A.Facility\u ID B.EIU年份=2012年 按B.F.U.ID订购 对于XML路径 ,21000[表格清单] 从设施A 工作得很好!对于XML。。。在我看来是有点黑魔法。产生一个结果,但不知道如何产生。我想是和regex在同一个班级。