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post gis
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| sql ="select st_isvalid(ar.geom::geometry) from assessment_ranges ar where ar.assessment_id=871762" | |
| rcd = ActiveRecord::Base.connection.exec_query(sql) | |
| rcd.rows | |
| ST_AsGeoJson | |
| st_isvalid | |
| https://postgis.net/docs/ST_IsValidDetail.html | |
| https://postgis.net/docs/ST_IsValidReason.html |
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select st_isvalid(ar.geom::geometry) from assessment_ranges ar where ar.assessment_id=44581940