#!/usr/bin/env bash # Load geometries from GeoJSON to Postgres # - assume postgres connection details are set in the environment using PGUSER, PGHOST etc. : ${1?"Usage: $0 ./path/to/mastermap/dir"} mastermap_dir=$1 # Create 'geometry' record with # id: , # source_id: , # geom: echo "Copy geometries to db..." find $mastermap_dir -type f -name '*.3857.csv' \ -printf "$mastermap_dir/%f\n" | \ parallel \ cat {} '|' psql -c "\"COPY geometries ( geometry_geom, source_id ) FROM stdin WITH CSV HEADER;\"" # Delete any duplicated geometries (by TOID) echo "Delete duplicate geometries..." psql -c "DELETE FROM geometries a USING ( SELECT MIN(ctid) as ctid, source_id FROM geometries GROUP BY source_id HAVING COUNT(*) > 1 ) b WHERE a.source_id = b.source_id AND a.ctid <> b.ctid;"