From 9d293016c5ee4a98580a3d470d62cad3a3f424c2 Mon Sep 17 00:00:00 2001
From: Tomas Kopecek <tkopecek@redhat.com>
Date: Nov 18 2019 09:51:42 +0000
Subject: remove old db constraint


Fixes: https://pagure.io/koji/issue/1789

---

diff --git a/docs/schema-upgrade-1.15-1.16.sql b/docs/schema-upgrade-1.15-1.16.sql
index 6c0f850..97586ba 100644
--- a/docs/schema-upgrade-1.15-1.16.sql
+++ b/docs/schema-upgrade-1.15-1.16.sql
@@ -60,5 +60,7 @@ ALTER TABLE host_channels ADD CONSTRAINT active_revoke_sane CHECK (
 ALTER TABLE host_channels ADD PRIMARY KEY (create_event, host_id, channel_id);
 ALTER TABLE host_channels ADD UNIQUE (host_id, channel_id, active);
 ALTER TABLE host_channels DROP CONSTRAINT host_channels_host_id_channel_id_key;
+-- drop potential very old constraint (https://pagure.io/koji/issue/1789)
+ALTER TABLE host_channels DROP CONSTRAINT IF EXISTS host_channels_host_id_key;
 
 COMMIT;
diff --git a/docs/schema-upgrade-1.19-1.20.sql b/docs/schema-upgrade-1.19-1.20.sql
new file mode 100644
index 0000000..66dcebe
--- /dev/null
+++ b/docs/schema-upgrade-1.19-1.20.sql
@@ -0,0 +1,10 @@
+-- upgrade script to migrate the Koji database schema
+-- from version 1.19 to 1.20
+
+
+BEGIN;
+
+-- drop potential very old constraint (https://pagure.io/koji/issue/1789)
+ALTER TABLE host_channels DROP CONSTRAINT IF EXISTS host_channels_host_id_key;
+
+COMMIT;