TopoElement
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Name

TopoElement — 将拓扑几何转换为拓扑元素。

Synopsis

topoelement TopoElement(topogeometry topo);

描述

将 TopoGeometry转换为TopoElement。

可用性：3.4.0

示例

这是一个完整的独立工作流程

-- do this if you don't have a topology setup already
-- Creates topology not allowing any tolerance
SELECT TopoElement(topo)
FROM neighborhoods;
-- using as cast
SELECT topology.TopoElementArray_Agg(topo::topoelement)
FROM neighborhoods
GROUP BY city;