Initial commit

boundaries/census_metropolitan_areas.sql

@@ -0,0 +1,56 @@
+/*
+Census Metropolitan Areas
+*/
+
+/* 2021
+Definition here: https://web.archive.org/web/20250518133322/https://www12.statcan.gc.ca/census-recensement/2021/ref/dict/az/Definition-eng.cfm?ID=geo009
+*/
+
+DROP TABLE IF EXISTS silver.cma_2021;
+CREATE TABLE silver.cma_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,
+    cma.dguid AS cma_dguid,
+    cma.dguidp AS cma_p_dguid,
+    cma.cmaname AS cma_name,
+    cma.cmatype AS cma_type,
+    cma.geom
+FROM
+    silver.pr_2021 AS pr,
+    bronze.lcma000a21a_e AS cma,
+    silver.dissemination_geographies_relationship_2021 AS dgr
+WHERE
+    pr.pr_dguid = dgr.pr_dguid
+    AND
+    concat(
+        cma.dguid,
+        cma.dguidp) = concat(
+        dgr.cma_dguid,
+        dgr.cma_p_dguid
+    );
+
+-- Make geometries valid
+UPDATE
+    silver.cma_2021
+SET
+    geom = st_makevalid(geom)
+WHERE
+    st_isvalid(geom) = 'f';
+
+-- Create spatial index
+CREATE INDEX cma_2021_geom_idx ON silver.cma_2021 USING gist (geom) WITH (
+    fillfactor = 100
+);