mirror of
https://github.com/dataforcanada/d4c-datapkg-statistical.git
synced 2026-06-13 14:10:55 +02:00
Diego Ripley
95 lines
2.2 KiB
SQL
95 lines
2.2 KiB
SQL
/*
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Census Tracts
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*/
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/* 2021
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Definition here: https://web.archive.org/web/20241013011815/https://www12.statcan.gc.ca/census-recensement/2021/ref/dict/az/Definition-eng.cfm?ID=geo013
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*/
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-- Digital boundary;
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DROP TABLE IF EXISTS silver.ct_2021_digital;
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CREATE TABLE silver.ct_2021_digital AS
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SELECT DISTINCT
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cma.country_dguid,
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cma.country_en_name,
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cma.country_fr_name,
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cma.country_en_abbreviation,
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cma.country_fr_abbreviation,
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cma.grc_dguid,
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cma.grc_en_name,
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cma.grc_fr_name,
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cma.pr_dguid,
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cma.pr_en_name,
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cma.pr_fr_name,
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cma.pr_en_abbreviation,
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cma.pr_fr_abbreviation,
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cma.pr_iso_code,
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cma.cma_dguid,
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cma.cma_p_dguid,
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cma.cma_name,
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cma.cma_type,
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ct.dguid AS ct_dguid,
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ct.geom
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FROM silver.dissemination_geographies_relationship_2021 AS dgr
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LEFT JOIN bronze.lct_000a21a_e AS ct
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ON dgr.ct_dguid = ct.dguid
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LEFT JOIN silver.cma_2021_digital AS cma
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ON
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concat(dgr.cma_dguid, dgr.cma_p_dguid)
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= concat(cma.cma_dguid, cma.cma_p_dguid)
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WHERE dgr.ct_dguid IS NOT null;
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-- Make geometries valid
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UPDATE
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silver.ct_2021_digital
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SET
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geom = st_makevalid(geom)
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WHERE
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st_isvalid(geom) = 'f';
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-- Create spatial index
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CREATE INDEX ct_2021_digital_geom_idx ON silver.ct_2021_digital USING gist (geom) WITH (
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fillfactor = 100
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);
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-- Cartographic boundary;
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DROP TABLE IF EXISTS silver.ct_2021_cartographic;
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CREATE TABLE silver.ct_2021_cartographic AS
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SELECT DISTINCT
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b.country_dguid,
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b.country_en_name,
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b.country_fr_name,
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b.country_en_abbreviation,
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b.country_fr_abbreviation,
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b.grc_dguid,
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b.grc_en_name,
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b.grc_fr_name,
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b.pr_dguid,
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b.pr_en_name,
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b.pr_fr_name,
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b.pr_en_abbreviation,
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b.pr_fr_abbreviation,
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b.pr_iso_code,
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b.cma_dguid,
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b.cma_p_dguid,
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b.cma_name,
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b.cma_type,
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b.ct_dguid,
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a.geom
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FROM
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bronze.lct_000b21a_e AS a,
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silver.ct_2021_digital AS b
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WHERE a.dguid = b.ct_dguid;
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-- Make geometries valid
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UPDATE
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silver.ct_2021_cartographic
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SET
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geom = st_makevalid(geom)
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WHERE
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st_isvalid(geom) = 'f';
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-- Create spatial index
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CREATE INDEX ct_2021_cartographic_geom_idx ON silver.ct_2021_cartographic USING gist (geom) WITH (
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fillfactor = 100
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); |