chore(*.psql/*.sql): update all *.psql to *.sql files

queries/functions/parse_country_field.sql

@@ -0,0 +1,21 @@
+CREATE OR REPLACE FUNCTION normalize_country_field(countryField TEXT)
+RETURNS TEXT AS $$
+DECLARE
+  delimiters TEXT[] := ARRAY[',', '/', '&', 'and'];
+  countries TEXT[];
+  temp TEXT[];
+  result TEXT := '';
+  i INTEGER;
+BEGIN
+  countries := string_to_array(countryField, ',');
+  FOR i IN 1..array_length(delimiters, 1) LOOP
+    temp := ARRAY[]::TEXT[];
+    FOREACH result IN ARRAY countries LOOP
+      temp := array_cat(temp, string_to_array(result, delimiters[i]));
+    END LOOP;
+    countries := temp;
+  END LOOP;
+  result := array_to_string(countries, ' ');
+  RETURN trim(result);
+END;
+$$ LANGUAGE plpgsql;