Add definition of anyarray_uniq function to helpers sql

sql/helper_functions.sql

@@ -1,4 +1,67 @@
---  see: https://stackoverflow.com/questions/22677463/how-to-merge-all-integer-arrays-from-all-records-into-single-array-in-postgres/22677955#22677955
+-- SOURCE: https://github.com/JDBurnZ/postgresql-anyarray/blob/master/stable/anyarray_uniq.sql
+DROP FUNCTION IF EXISTS anyarray_uniq(anyarray);
+CREATE OR REPLACE FUNCTION anyarray_uniq(with_array anyarray)
+	RETURNS anyarray AS
+$BODY$
+	DECLARE
+		-- The variable used to track iteration over "with_array".
+		loop_offset integer;
+
+		-- The array to be returned by this function.
+		return_array with_array%TYPE := '{}';
+	BEGIN
+		IF with_array IS NULL THEN
+			return NULL;
+		END IF;
+
+		IF with_array = '{}' THEN
+		    return return_array;
+		END IF;
+
+		-- Iterate over each element in "concat_array".
+		FOR loop_offset IN ARRAY_LOWER(with_array, 1)..ARRAY_UPPER(with_array, 1) LOOP
+			IF with_array[loop_offset] IS NULL THEN
+				IF NOT EXISTS(
+					SELECT 1 
+					FROM UNNEST(return_array) AS s(a)
+					WHERE a IS NULL
+				) THEN
+					return_array = ARRAY_APPEND(return_array, with_array[loop_offset]);
+				END IF;
+			-- When an array contains a NULL value, ANY() returns NULL instead of FALSE...
+			ELSEIF NOT(with_array[loop_offset] = ANY(return_array)) OR NOT(NULL IS DISTINCT FROM (with_array[loop_offset] = ANY(return_array))) THEN
+				return_array = ARRAY_APPEND(return_array, with_array[loop_offset]);
+			END IF;
+		END LOOP;
+	RETURN return_array;
+ END;
+$BODY$ LANGUAGE plpgsql;
+
+-- SOURCE: https://github.com/JDBurnZ/postgresql-anyarray/blob/master/stable/anyarray_remove_null.sql
+DROP FUNCTION IF EXISTS anyarray_remove_null(anyarray);
+CREATE OR REPLACE FUNCTION anyarray_remove_null(from_array anyarray)
+        RETURNS anyarray AS
+$BODY$
+        DECLARE
+                -- The variable used to track iteration over "from_array".
+                loop_offset integer;
+
+                -- The array to be returned by this function.
+                return_array from_array%TYPE;
+        BEGIN
+                -- Iterate over each element in "from_array".
+                FOR loop_offset IN ARRAY_LOWER(from_array, 1)..ARRAY_UPPER(from_array, 1) LOOP
+                        IF from_array[loop_offset] IS NOT NULL THEN -- If NULL, will omit from "return_array".
+                                return_array = ARRAY_APPEND(return_array, from_array[loop_offset]);
+                        END IF;
+                END LOOP;
+
+                RETURN return_array;
+        END;
+$BODY$ LANGUAGE plpgsql;
+
+-- HELPFUL LINKS:
+-- https://stackoverflow.com/questions/22677463/how-to-merge-all-integer-arrays-from-all-records-into-single-array-in-postgres/22677955#22677955
 DROP AGGREGATE IF EXISTS array_cat_agg(anyarray);
 CREATE AGGREGATE array_cat_agg(anyarray) (
   SFUNC=array_cat,
@@ -23,7 +86,7 @@ $$ LANGUAGE SQL;
 
 
 
-
+-- HELPFUL LINKS:
 -- http://blog.scoutapp.com/articles/2016/07/12/how-to-make-text-searches-in-postgresql-faster-with-trigram-similarity
 -- http://www.postgresonline.com/journal/archives/169-Fuzzy-string-matching-with-Trigram-and-Trigraphs.html
 

sql/registrations_with_contacts.sql

@@ -1,31 +1,9 @@
--- https://github.com/aepyornis/hpd/blob/master/sql/anyarray_remove_null.sql
-DROP FUNCTION IF EXISTS anyarray_remove_null(anyarray);
-CREATE OR REPLACE FUNCTION anyarray_remove_null(from_array anyarray)
-        RETURNS anyarray AS
-$BODY$
-        DECLARE
-                -- The variable used to track iteration over "from_array".
-                loop_offset integer;
-
-                -- The array to be returned by this function.
-                return_array from_array%TYPE;
-        BEGIN
-                -- Iterate over each element in "from_array".
-                FOR loop_offset IN ARRAY_LOWER(from_array, 1)..ARRAY_UPPER(from_array, 1) LOOP
-                        IF from_array[loop_offset] IS NOT NULL THEN -- If NULL, will omit from "return_array".
-                                return_array = ARRAY_APPEND(return_array, from_array[loop_offset]);
-                        END IF;
-                END LOOP;
-
-                RETURN return_array;
-        END;
-$BODY$ LANGUAGE plpgsql;
-
-DROP TABLE IF EXISTS hpd_registrations_with_contacts;
-
 -- This is mainly used as an easy way to provide contact info on request, not a replacement
 -- for cross-table analysis. Hence why the corpnames, businessaddrs, and ownernames are simplified
 -- with JSON and such.
+
+DROP TABLE IF EXISTS hpd_registrations_with_contacts;
+
 CREATE TABLE hpd_registrations_with_contacts
 as SELECT
   registrations.housenumber,

who-owns-what.yml

@@ -17,9 +17,9 @@ api_dependencies:
 sql:
   # These SQL scripts must be executed in order, as
   # some of them depend on others.
+  - helper_functions.sql
   - registrations_with_contacts.sql
   - create_bldgs_table.sql
-  - helper_functions.sql
   - search_function.sql
   - agg_function.sql
   - landlord_contact.sql