Initial commit

boundaries/census_tracts.sql

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+/*
+Census Tracts
+*/
+
+/* 2021
+Definition here: https://web.archive.org/web/20241013011815/https://www12.statcan.gc.ca/census-recensement/2021/ref/dict/az/Definition-eng.cfm?ID=geo013
+*/
+
+DROP TABLE IF EXISTS silver.ct_2021;
+CREATE TABLE silver.ct_2021 AS
+SELECT DISTINCT
+    cma.country_dguid,
+    cma.country_en_name,
+    cma.country_fr_name,
+    cma.country_en_abbreviation,
+    cma.country_fr_abbreviation,
+    cma.grc_dguid,
+    cma.grc_en_name,
+    cma.grc_fr_name,
+    cma.pr_dguid,
+    cma.pr_en_name,
+    cma.pr_fr_name,
+    cma.pr_en_abbreviation,
+    cma.pr_fr_abbreviation,
+    cma.pr_iso_code,
+    cma.cma_dguid,
+    cma.cma_p_dguid,
+    cma.cma_name,
+    cma.cma_type,
+    ct.dguid AS ct_dguid,
+    ct.geom
+FROM silver.dissemination_geographies_relationship_2021 AS dgr
+LEFT JOIN bronze.lct_000a21a_e AS ct
+    ON dgr.ct_dguid = ct.dguid
+LEFT JOIN silver.cma_2021 AS cma
+    ON
+        concat(dgr.cma_dguid, dgr.cma_p_dguid)
+        = concat(cma.cma_dguid, cma.cma_p_dguid)
+WHERE dgr.ct_dguid IS NOT null;
+
+-- Make geometries valid
+UPDATE
+    silver.ct_2021
+SET
+    geom = st_makevalid(geom)
+WHERE
+    st_isvalid(geom) = 'f';
+
+-- Create spatial index
+CREATE INDEX ct_2021_geom_idx ON silver.ct_2021 USING gist (geom) WITH (
+    fillfactor = 100
+);