refactor: simplify stg_customers query

models/staging/stg_customers.sql

@@ -7,18 +7,9 @@ with source as (
 renamed as (
 
     select
-        id                                  as customer_id,
-        lower(email)                        as email,
-        first_name,
-        last_name,
-        concat(first_name, ' ', last_name)  as full_name,
-        age,
-        gender,
-        city,
-        state,
-        country,
-        traffic_source,
-        created_at
+
+        *
+
     from source
 
 )