Initial commit

boundaries/population_centres.sql

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+/*
+Population Centres
+*/
+
+/* 2021
+Definition here: https://web.archive.org/web/20250324222733/https://www12.statcan.gc.ca/census-recensement/2021/ref/dict/az/definition-eng.cfm?ID=geo049a
+*/
+
+DROP TABLE IF EXISTS silver.pop_ctr_2021;
+CREATE TABLE silver.pop_ctr_2021 AS
+SELECT DISTINCT
+    pr.country_dguid,
+    pr.country_en_name,
+    pr.country_fr_name,
+    pr.country_en_abbreviation,
+    pr.country_fr_abbreviation,
+    pr.grc_dguid,
+    pr.grc_en_name,
+    pr.grc_fr_name,
+    pr.pr_dguid,
+    pr.pr_en_name,
+    pr.pr_fr_name,
+    pr.pr_en_abbreviation,
+    pr.pr_fr_abbreviation,
+    pr.pr_iso_code,
+    gaf.pop_ctr_dguid,
+    gaf.pop_ctr_p_dguid,
+    pop_ctr.pcname AS pop_ctr_name,
+    pop_ctr.pctype AS pop_ctr_type,
+    pop_ctr.pcclass AS pop_ctr_class,
+    pop_ctr.geom
+FROM silver.gaf_2021 AS gaf
+LEFT JOIN bronze.lpc_000a21a_e AS pop_ctr
+    ON
+        concat(gaf.pop_ctr_dguid, gaf.pop_ctr_p_dguid)
+        = concat(pop_ctr.dguid, pop_ctr.dguidp)
+LEFT JOIN silver.pr_2021 AS pr
+    ON gaf.pr_dguid = pr.pr_dguid
+WHERE gaf.pop_ctr_dguid IS NOT null OR gaf.pop_ctr_p_dguid IS NOT null;
+
+-- Make geometries valid
+UPDATE
+    silver.pop_ctr_2021
+SET
+    geom = st_makevalid(geom)
+WHERE
+    st_isvalid(geom) = 'f';
+
+-- Create spatial index
+CREATE INDEX pop_ctr_2021_geom_idx ON silver.pop_ctr_2021 USING gist (
+    geom
+) WITH (fillfactor = 100);