P5-6033 blacklist collections (#188)

migrations/000.306.sql

@@ -0,0 +1,21 @@
+-- P5-6033: blacklist collections
+
+
+create table collections_blacklist (
+    id serial primary key,
+    collection_id integer not null,
+    market_id integer not null,
+    unique(collection_id, market_id)
+);
+
+
+alter table collections_blacklist
+    add constraint collection_fkey
+    foreign key (collection_id)
+    references collections(id) match simple;
+
+
+alter table collections_blacklist
+    add constraint market_fkey
+    foreign key (market_id)
+    references markets(id) match simple;