✨ Fix naming inconsistencies on migrations.

backend/resources/migrations/0004-add-tasks-tables.sql

@@ -0,0 +1,40 @@
+CREATE TABLE task (
+  id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
+
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  completed_at timestamptz NULL DEFAULT NULL,
+  scheduled_at timestamptz NOT NULL,
+  priority smallint DEFAULT 100,
+
+  queue text NOT NULL,
+
+  name text NOT NULL,
+  props bytea NOT NULL,
+
+  error text NULL DEFAULT NULL,
+
+  retry_num smallint NOT NULL DEFAULT 0,
+  status text NOT NULL DEFAULT 'new'
+);
+
+CREATE INDEX task__scheduled_at__queue__idx
+    ON task (scheduled_at, queue);
+
+CREATE TRIGGER task__modified_at__tgr
+BEFORE UPDATE ON task
+   FOR EACH ROW EXECUTE PROCEDURE update_modified_at();
+
+CREATE TABLE scheduled_task (
+  id text PRIMARY KEY,
+
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  executed_at timestamptz NULL DEFAULT NULL,
+
+  cron_expr text NOT NULL
+);
+
+CREATE TRIGGER scheduled_task__modified_at__tgr
+BEFORE UPDATE ON scheduled_task
+   FOR EACH ROW EXECUTE PROCEDURE update_modified_at();