finish historical extraction

transform/sqlmesh-materia/models/example/full_model.sql

@@ -0,0 +1,15 @@
+MODEL (
+  name sqlmesh_example.full_model,
+  kind FULL,
+  cron '@daily',
+  grain item_id,
+  audits (assert_positive_order_ids),
+);
+
+SELECT
+  item_id,
+  COUNT(DISTINCT id) AS num_orders,
+FROM
+  sqlmesh_example.incremental_model
+GROUP BY item_id
+  

transform/sqlmesh-materia/models/example/incremental_model.sql

@@ -0,0 +1,19 @@
+MODEL (
+  name sqlmesh_example.incremental_model,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column event_date
+  ),
+  start '2020-01-01',
+  cron '@daily',
+  grain (id, event_date)
+);
+
+SELECT
+  id,
+  item_id,
+  event_date,
+FROM
+  sqlmesh_example.seed_model
+WHERE
+  event_date BETWEEN @start_date AND @end_date
+  

transform/sqlmesh-materia/models/example/seed_model.sql

@@ -0,0 +1,13 @@
+MODEL (
+  name sqlmesh_example.seed_model,
+  kind SEED (
+    path '../seeds/seed_data.csv'
+  ),
+  columns (
+    id INTEGER,
+    item_id INTEGER,
+    event_date DATE
+  ),
+  grain (id, event_date)
+);
+