diff --git a/migrations/test.sql b/migrations/test.sql
new file mode 100644
index 0000000..863c3db
--- /dev/null
+++ b/migrations/test.sql
@@ -0,0 +1,14 @@
+create view if not exists prov_by_type as
+    with
+        trades as (select distinct trade_node from provinces where trade_node != ''),
+        areas as (select distinct area from provinces where area != ''),
+        regions as (select distinct region from provinces where region != '')
+    select 'trade_node' as typ, provinces.trade_node as name, name as province, id
+    from provinces inner join trades on trades.trade_node = provinces.trade_node
+    union
+    select 'area' as typ, provinces.area as name, name as province, id
+    from provinces inner join areas on areas.area = provinces.area
+    union
+    select 'region' as typ, provinces.region as name, name as province, id
+    from provinces inner join regions on regions.region = provinces.region
+;