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]) As tea FROM generate_series(1,3) As e CROSS JOIN generate_series(1,4) As t; tea -------------------------------------------------------------------------- {{1,1},{1,2},{1,3},{1,4},{2,1},{2,2},{2,3},{2,4},{3,1},{3,2},{3,3},{3,4}}