diff --git a/db/sql/migrations/v0.0.0.sql b/db/sql/migrations/v0.0.0.sql
index ed69212bf..01bb82f5d 100644
--- a/db/sql/migrations/v0.0.0.sql
+++ b/db/sql/migrations/v0.0.0.sql
@@ -17,6 +17,7 @@ create table `project` (
 );
 
 create table `project__user` (
+	`id` integer primary key autoincrement,
 	`project_id` int not null,
 	`user_id` int not null,
 	`admin` boolean not null default false,
@@ -101,12 +102,13 @@ create table `task` (
 	foreign key (`template_id`) references project__template(`id`) on delete cascade
 );
 
-create table `task__output` (
-	`task_id` int not null,
-	`task` varchar(255) not null,
-	`time` datetime not null,
-	`output` longtext not null,
+create table task__output
+(
+    id integer primary key autoincrement,
+    task_id int not null,
+    task varchar(255) not null,
+    time datetime not null,
+    output longtext not null,
 
-	unique (`task_id`, `time`),
-	foreign key (`task_id`) references task(`id`) on delete cascade
-);
+    foreign key (`task_id`) references task(`id`) on delete cascade
+);
\ No newline at end of file
diff --git a/db/sql/migrations/v1.4.0.sql b/db/sql/migrations/v1.4.0.sql
index 635532ead..690e6f3df 100644
--- a/db/sql/migrations/v1.4.0.sql
+++ b/db/sql/migrations/v1.4.0.sql
@@ -1,9 +1,14 @@
-CREATE TABLE `event` (
-  `project_id` int DEFAULT NULL,
-  `object_id` int DEFAULT NULL,
-  `object_type` varchar(20) DEFAULT '',
-  `description` text,
-  `created` datetime NOT NULL
+create table `event`
+(
+    `id`          integer primary key autoincrement,
+    `project_id`  int,
+    `object_id`   int,
+    `object_type` varchar(20) DEFAULT '',
+    `description` text,
+    `created`     datetime NOT NULL,
+    `user_id`     int,
+    foreign key (`project_id`) references `project` (`id`) on delete cascade,
+    foreign key (`user_id`) references `user` (`id`) on delete set null
 );
 
 alter table `task` add `created` datetime null;
diff --git a/db/sql/migrations/v2.2.1.sql b/db/sql/migrations/v2.2.1.sql
index 2cf48247d..e69de29bb 100644
--- a/db/sql/migrations/v2.2.1.sql
+++ b/db/sql/migrations/v2.2.1.sql
@@ -1,16 +0,0 @@
-alter table task__output rename to task__output_backup;
-
-create table task__output
-(
-    id integer primary key autoincrement,
-    task_id int not null,
-    task varchar(255) not null,
-    time datetime not null,
-    output longtext not null,
-
-    foreign key (`task_id`) references task(`id`) on delete cascade
-);
-
-insert into task__output(task_id, task, time, output) select * from task__output_backup;
-
-drop table task__output_backup;
diff --git a/db/sql/migrations/v2.7.4.sql b/db/sql/migrations/v2.7.4.sql
index 647b07c90..e69de29bb 100644
--- a/db/sql/migrations/v2.7.4.sql
+++ b/db/sql/migrations/v2.7.4.sql
@@ -1 +0,0 @@
-alter table `event` add `user_id` int null references `user`(`id`);
diff --git a/db/sql/migrations/v2.8.20.sql b/db/sql/migrations/v2.8.20.sql
index 3cd5d28b6..e69de29bb 100644
--- a/db/sql/migrations/v2.8.20.sql
+++ b/db/sql/migrations/v2.8.20.sql
@@ -1,14 +0,0 @@
-alter table `event` rename to `event_backup_5784568`;
-
-create table `event`
-(
-    `id`          integer primary key autoincrement,
-    `project_id`  int,
-    `object_id`   int,
-    `object_type` varchar(20) DEFAULT '',
-    `description` text,
-    `created`     datetime NOT NULL,
-    `user_id`     int,
-    foreign key (`project_id`) references `project` (`id`) on delete cascade,
-    foreign key (`user_id`) references `user` (`id`) on delete set null
-);