Add promotion information

Signed-off-by: popcorny <[email protected]>

Author: popcornylu

models/customers.sql

@@ -34,7 +34,8 @@ customer_payments as (
 
     select
         orders.customer_id,
-        sum(amount)::bigint as total_amount
+        sum(amount)::bigint as total_amount,
+        bool_or(is_promotion) as has_promoted_orders
 
     from payments
 

models/staging/stg_payments.sql

@@ -16,7 +16,8 @@ renamed as (
         payment_method,
 
         -- `amount` is currently stored in cents, so we convert it to dollars
-        amount / 100 as amount
+        amount / 100 as amount,
+        payment_method == 'coupon' as is_promotion
 
     from source