我有一个具有以下结构的表格:
id, - 主键
最小纬度 - 正方形的边界点
最小经度 - 正方形的边界点 maxlatitude - 正方形的边界点 maxlongitude-正方形的边界点
cetnerLatitude - 正方形的中心 centerLongtude - 正方形的中心
最小最大字段创建一个正方形,中心纬度/经度是正方形的中心点。
我想使用“xml路径”生成KML文件。生成的 KML 文件应类似于以下内容:
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
<Placemark>
<name>example</name>
<description>
dafdafdsaf
</description>
<Point>
<coordinates>102.594411,14.998518</coordinates>
</Point>
<Polygon>
<extrude>1</extrude>
<altitudeMode>relativeToGround</altitudeMode>
<outerBoundaryIs>
<LinearRing>
<coordinates>
-77.05788457660967,38.87253259892824,100
-77.05465973756702,38.87291016281703,100
-77.05315536854791,38.87053267794386,100
-77.05788457660967,38.87253259892824,100
</coordinates>
</LinearRing>
</outerBoundaryIs>
</Polygon>
</Placemark>
</Document>
</kml>"""
我开始解决 xmlpath SQL 查询,到目前为止得到了以下结果:
declare @id int
set @id = 22438
declare @kml xml;
with XMLNAMESPACES(
'http://www.opengis.net/gml' as gml,
'http://www.georss.org/georss' as georss
)
select @kml =
(select some as id ,
cast([cent_latt] as varchar) + ', ' + cast([cent_long] as varchar) as Point
from mytable
Where some = @id
for xml path('Placemark'), root('Document')
)
select @kml
任何人都可以帮助生成如上所述的确切文件吗?
或者有没有办法使用 xslt 来达到同样的目的?
最佳答案
我无法真正理解哪些列名代表哪些信息,因此我创建了一个示例表,它将向您展示如何将不同部分放入 XML 中。
declare @T table
(
Name varchar(50),
Description varchar(50),
Point varchar(50),
Extrude int,
AltitudeMode varchar(50),
Coordinates varchar(200)
);
insert into @T values
('example', 'dafdafdsaf', '102.594411,14.998518', 1, 'relativeToGround',
'-77.05788457660967,38.87253259892824,100
-77.05465973756702,38.87291016281703,100
-77.05315536854791,38.87053267794386,100
-77.05788457660967,38.87253259892824,100');
with xmlnamespaces(default 'http://www.opengis.net/kml/2.2')
select (
select Name as name,
Description as description,
Point as 'Point/coordinates',
(
select Extrude as extrude,
AltitudeMode as altitudeMode,
Coordinates as 'outerBoundaryIs/LinearRing/coordinates'
for xml path('Polygon'), type
)
from @T
for xml path('Placemark'), type
)
for xml path('Document'), root('kml');
结果:
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
<Placemark xmlns="http://www.opengis.net/kml/2.2">
<name>example</name>
<description>dafdafdsaf</description>
<Point>
<coordinates>102.594411,14.998518</coordinates>
</Point>
<Polygon xmlns="http://www.opengis.net/kml/2.2">
<extrude>1</extrude>
<altitudeMode>relativeToGround</altitudeMode>
<outerBoundaryIs>
<LinearRing>
<coordinates>-77.05788457660967,38.87253259892824,100
-77.05465973756702,38.87291016281703,100
-77.05315536854791,38.87053267794386,100
-77.05788457660967,38.87253259892824,100</coordinates>
</LinearRing>
</outerBoundaryIs>
</Polygon>
</Placemark>
</Document>
</kml>
关于sql - 在 SQL 2008 中生成 KML,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9312896/