【Posgres】复杂查询-行转GeoJson及字段转属性

参考：https://mp.weixin.qq.com/s?__biz=MzI2NTU5NTk5NA==&mid=2247483771&idx=1&sn=da0284b41d71550e1a05e70f2c1b713f&chksm=ea9bbc4eddec35586e24952337c2e6d7ae3738793b17a443e61f9c80600e5c2d25cd1b3a9fe2&token=165633271&lang=zh_CN#rd

with feature as (
select 'Feature' as "type",
    ST_AsGeoJson(geom)::json as geometry,
    (select  row_to_json(t) as  "properties" from (
    select XXX,YYY,ZZZ from AAAA where XXX=ccc.XXX) t )
from 
    AAA as ccc  
where 
    ccc.XXX is not null  
),
features as (
select 'FeatureCollection' as "type",
    array_to_json(array_agg(feature.*)) as "features"
from
    feature
)
select row_to_json(features.*) from features;