我在一个名为geojsonObjectAsString的对象中有featureCollection，如下所示。最初，该对象属于dictionary类型，我通过进行了转换
json.dumps(geojsonObjectAsJSON)
我希望能够从geojsonObjectAsString中仅选择features、properties和几何体。我尝试了以下几种：
query = """SELECT row_to_json('{featuresArray}')
FROM '{featuresArray}'""".format(featuresArray=featuresArray)
但不幸的是，我收到了以下错误：
FEHLER: syntax error at »'{"type": "FeatureCollection", "features": [{"type": "Feature", "properties":...
请告诉我如何从json/geojson对象进行查询。
我参考了以下链接：OSM在Python中获取从路线A到B的持续时间和方向python json转储将对象放入row_tojson返回的对象中http://www.postgresonline.com/journal/archives/267-Creating-GeoJSON-Feature-Collections-with-JSON-and-PostGIS-functions.html
geojsonObjectAsString：
{"type": "FeatureCollection", "features": [{"type": "Feature", "properties": {"treeID": "99", "XTOP": "338535.01", "YTOP": "5667141.11", "ZTOP": "19.98", "Zmax": "19.98", "Zmean": "1.8232183908046", "Zmin": "-0.03", "ID": "1"}, "geometry": {"type": "Polygon", "coordinates": [[[6.69223420722764, 51.1329165124371], [6.69222819326484, 51.1329081193748], [6.69221180776184, 51.1329013203209], [6.69219149698336, 51.1329073049609], [6.69217949340067, 51.1329244260894], [6.69217956546811, 51.1329430447612], [6.69218526127669, 51.1329578171713], [6.692200130301, 51.1329606289999], [6.69220511560768, 51.1329581192089], [6.69221372090576, 51.1329518135339], [6.69222707128915, 51.132939215911], [6.69223420722764, 51.1329165124371]]]}}, {"type": "Feature", "properties": {"treeID": "109", "XTOP": "338537.53", "YTOP": "5667129.66", "ZTOP": "18.9", "Zmax": "18.9", "Zmean": "0.56044776119403", "Zmin": "-0.04", "ID": "2"}, "geometry": {"type": "Polygon", "coordinates": [[[6.69226547705025, 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"properties": {"treeID": "167", "XTOP": "338561.94", "YTOP": "5667111.06", "ZTOP": "0.02", "Zmax": "0.02", "Zmean": "0.01", "Zmin": "0", "ID": "54"}, "geometry": {"type": "Polygon", "coordinates": [[[6.6926093492694, 51.1326774867805], [6.69260141945561, 51.132675981177], [6.69259755871106, 51.1326788729362], [6.69259157718697, 51.1326870291983], [6.69260800971343, 51.1326814176284], [6.6926093492694, 51.1326774867805]]]}}]}
一个简单的方法是解析CTE中的json字符串，并在单独的查询中正确过滤记录，例如，从特征集合中只选择properties中的treeID等于99:的几何体
WITH j (el) AS (
SELECT json_array_elements('{"type": "FeatureCollection", "features": [{"type": "Feature", "properties": {"treeID": "99", "XTOP": "338535.01", "YTOP": "5667141.11", "ZTOP": "19.98", "Zmax": "19.98", "Zmean": "1.8232183908046", "Zmin": "-0.03", "ID": "1"}, "geometry": {"type": "Polygon", "coordinates": [[[6.69223420722764, 51.1329165124371], [6.69222819326484, 51.1329081193748], [6.69221180776184, 51.1329013203209], [6.69219149698336, 51.1329073049609], [6.69217949340067, 51.1329244260894], [6.69217956546811, 51.1329430447612], [6.69218526127669, 51.1329578171713], [6.692200130301, 51.1329606289999], [6.69220511560768, 51.1329581192089], [6.69221372090576, 51.1329518135339], [6.69222707128915, 51.132939215911], [6.69223420722764, 51.1329165124371]]]}}, {"type": "Feature", "properties": {"treeID": "109", "XTOP": "338537.53", "YTOP": "5667129.66", "ZTOP": "18.9", "Zmax": "18.9", "Zmean": "0.56044776119403", "Zmin": "-0.04", "ID": "2"}, "geometry": {"type": "Polygon", "coordinates": [[[6.69226547705025, 51.1328283605685], [6.69226477705279, 51.1328251989051], [6.69225817843627, 51.1328170641171], [6.69225114186537, 51.1328119785883], [6.69223507726445, 51.1328073443943], [6.69221209610711, 51.1328439453134], [6.69221314385783, 51.1328487327339], [6.6922180820046, 51.1328586335107], [6.69223237530096, 51.1328615239076], [6.6922479146764, 51.132859492291], [6.69225680945743, 51.1328559804184], [6.69226797350914, 51.1328413609834], [6.69226547705025, 51.1328283605685]]]}}, {"type": "Feature", "properties": {"treeID": "112", "XTOP": "338537.83", "YTOP": "5667124.38", "ZTOP": "0.03", "Zmax": "0.03", "Zmean": "0.0125", "Zmin": "-0.01", "ID": "3"}, "geometry": {"type": "Polygon", "coordinates": [[[6.69225693096545, 51.1327847516032], [6.69224029730571, 51.1327915283526], [6.69224729022912, 51.1327917563467], [6.69225693096545, 51.1327847516032]]]}}, {"type": "Feature", "properties": {"treeID": "130", "XTOP": "338538.62", "YTOP": "5667117.07", "ZTOP": "0.02", "Zmax": 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)
SELECT
el->'properties' AS properties,
ST_GeomFromGeoJSON(el->>'geometry') AS features
FROM j
WHERE el->'properties'->>'treeID' = '99';
演示：db<>fiddle