TopoElementArray_Agg — 返回一组 element_id、类型数组 (topoelements) 的 topoelementarray。
topoelementarray TopoElementArray_Agg(topoelement set tefield);
SELECT topology.TopoElementArray_Agg(ARRAY[e, t] ORDER BY e, t) As tea FROM generate_series(1, 3) As e CROSS JOIN generate_series(1, 4) As t;
{{1,1},{1,2},{1,3},{1,4},{2,1},{2,2},{2,3},{2,4},{3,1},{3,2},{3,3},{3,4}}