这个让我有点难过,我试图从这个SQL查询中获取我的顶级(根)节点XML中的总计数:
SELECT COUNT(*) OVER() as '@totalCount', (
SELECT COUNT(*) OVER() as totalCount, [Title], [Year], [Type], [Poster]
FROM movies As result where CONTAINS(Title, @Title) Order by [Weight] DESC
OFFSET ((@PageNumber - 1) * @RowspPage) ROWS
FETCH NEXT @RowspPage ROWS ONLY
FOR XML AUTO, type
)
FOR XML PATH('root')
显然,COUNT(*)
OVER()
仅返回" 1"因为它是在顶层而不是在子查询中执行的。但我只希望在根节点中显示一次,而不是每个结果重复一次。
非常感谢任何帮助。
答案 0 :(得分:3)
编辑:这是一个包含常用数据的工作示例:
;with myCTE as
(
select *
from sys.objects
)
select (select count(*) from myCTE) as [@Counter]
,(
SELECT myCTE.object_id AS id
,mycte.name AS name
from myCTE
for xml path('object'),TYPE
)
for xml path('test')
您可能会尝试将查询转换为CTE并将其置于以下内容中:
;WITH MyQueryAsCTE AS
(
SELECT [Title], [Year], [Type], [Poster]
FROM movies As result where CONTAINS(Title, @Title) Order by [Weight] DESC
OFFSET ((@PageNumber - 1) * @RowspPage) ROWS
FETCH NEXT @RowspPage ROWS ONLY
)
SELECT (SELECT Count(*) FROM MyQueryAsCTE) as '@totalFound'
,[Title] AS [Movie/Title]
,[Year] AS [Movie/Year]
,[Type] AS [Movie/Type]
,[Poster] AS [Movie/Poster]
FROM MyQueryAsCTE
FOR XML PATH('root')
答案 1 :(得分:0)
有趣的字符串...这是一个彻底的黑客,但它的工作原理:
DECLARE @totalCount AS INT
DECLARE @result varchar(MAX)
SELECT @totalCount = COUNT(*) OVER(), @result = COALESCE(@result + '', '') + '<result title="' + [Title] + '" year="' + [Year] + '" type="' + [Type] + '"/>'
FROM Movies where CONTAINS(Title, '@Title') Order by [Weight] DESC
OFFSET ((@PageNumber - 1) * @RowspPage) ROWS
FETCH NEXT @RowspPage ROWS ONLY
SELECT '<root totalCount="' + CAST(@totalCount AS VARCHAR) + '">' + @result + '</root>'
输出:
似乎有更快/更高效的执行计划,因为计算只进行一次,并且不需要对任何表进行额外查询。