问题描述
我想为以下输出添加别名:
I want to alias the output of the following:
-- Test table with some rubbish data
DECLARE @Test TABLE
(
Names [varchar](20)
)
INSERT INTO @Test
SELECT 'Simon'
-- Query returns but with XML_<GUID> alias
SELECT
Names
FROM
@Test t
FOR XML PATH ('Test')
因此，为了争论，我想给它一个别名，而不是 XML_GUID 的列标题.我似乎无法得到它.有谁知道怎么做?我尝试以下示例:http://social.msdn.microsoft.com/Forums/nl/sqlxml/thread/1605c722-6388-40ff-9ab5-a3817a1db81f 但我似乎无法让它返回.我总是遇到错误，说第 1 列没有名称.
So rather than a column header of XML_GUID I want to give it an alias of say 'Test' for sake of argument. I can't seem to get it. Anyone know how? I tried following an example from here: http://social.msdn.microsoft.com/Forums/nl/sqlxml/thread/1605c722-6388-40ff-9ab5-a3817a1db81f but I can't seem to get it to return. I always run into the error that says the is no name for column 1.
感谢任何帮助.
谢谢，
西蒙
推荐答案
使其成为子查询:
select (
SELECT
Names
FROM
@Test t
FOR XML PATH ('Test'),TYPE) as Test
子查询产生值但从不提供列的名称.我还指定了 ,TYPE 因为否则它会强制将结果转换为 varchar(max)，而您可能希望将其保留为 xml.
Subqueries produce values but never provide a name for a column. I also specified ,TYPE because otherwise it forces a conversion to varchar(max) on the result, whereas you presumably want to keep it as xml.
这篇关于别名 FOR XML PATH 结果的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！