Question

我在SQL Server中有一个表，其中包含使用Geometry数据类型的路段： ID（int），Geom（几何），Name（varchar（150））

我想创建一个视图，其中包含作为路段交点的点，每个交叉点一个点，以及一个串联列，它结合了这样的名称＆＃34; Main St @ George St @ Bob Street＆＃ 34。

我已经开始创建不同的交叉点geoms，但我还没有找到如何聚合和连接每个街道名称的线索：

select geometry::STGeomFromText(t2.[g], 26917) as Geom
from
(
    select distinct g
    from
    (
        select r1.[geom].STIntersection(r2.[geom]).ToString() as [g]
        from [Roads] r1 inner join
        [Roads] r2 on 
        r1.[geom].STTouches(r2.[geom]) = 1
        and r1.[ID] <> r2.[ID]
    ) t
) t2

Answer 1

select 
              RoadA
            , RoadB
            , '@ ' + RoadA + ' @ ' +RoadB as Intersecion
            , geometry::STGeomFromText(t2.[g], 26917) as Geom
from
(
    select  distinct g
            , RoadA
                , RoadB
    from
    (
        select r1.[Geom].STIntersection(r2.[Geom]).ToString()  as [g]
                , r1.Name as RoadA
                , r2.name as RoadB

        from Roads r1 inner join
        Roads r2 on 
        r1.[Geom].STTouches(r2.[Geom]) = 1
        and r1.[ID] <> r2.[ID]
    ) t
) t2

SQL Server几何交叉点道路

1 个答案: