From d0128b609cf9a891d74b4b3e01805d53b2af9db2 Mon Sep 17 00:00:00 2001
From: Brian Sperlongano <zelonewolf@gmail.com>
Date: Fri, 26 Jan 2024 19:32:49 -0500
Subject: [PATCH] Handdle various null cases

---
 layers/transportation/network_type.sql | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/layers/transportation/network_type.sql b/layers/transportation/network_type.sql
index a0b7e5e9..84c79b4a 100644
--- a/layers/transportation/network_type.sql
+++ b/layers/transportation/network_type.sql
@@ -35,9 +35,12 @@ $$ LANGUAGE sql IMMUTABLE
 
 CREATE OR REPLACE FUNCTION create_route_hstore(network TEXT, ref TEXT, name TEXT, colour TEXT, ref_colour TEXT)
 RETURNS hstore AS $$
-SELECT hstore(
-    ARRAY['network', 'ref', 'name', 'colour'],
-    ARRAY[network, ref, name, NULLIF(COALESCE(colour, ref_colour), '')]
-);
+SELECT CASE
+           WHEN network = '' THEN hstore('')
+           ELSE hstore(
+               ARRAY['network', 'ref', 'name', 'colour'],
+               ARRAY[network, NULLIF(ref, ''), name, NULLIF(COALESCE(colour, ref_colour), '')]
+           )
+       END;
 $$ LANGUAGE sql IMMUTABLE
     PARALLEL SAFE;