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